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Phylogeny || General Biology 2 || Quarter 1/3 Week 6

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0:02

Isang maganda at mainit na lunes ng

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hapon mga kaitolay.

0:08

Sa ating mga students, parents,

0:11

coachers, warm welcome po sa ating

0:14

italay online tutorial general biology

0:17

to ako po si Chutor Tina from San

0:19

Lorenzo Ruis Senior High School, SDO

0:22

Pasig. Happy Monday sa aking partner,

0:25

Tutor Easter. Kamusta po?

0:28

Magandang buhayertina.

0:30

Magandang buhay mga kaitulay at mga biar

0:33

students and partner schools. Ako po si

0:36

tutor Easter from Orao Del Caosta High

0:39

School, SDO Caloocan.

0:42

Okay. So today is March 21, 2022. Nasa

0:46

week 6 na po tayo ng ating aralin at for

0:49

this week we're going to discuss

0:51

biology. Okay. So bago tayo magsimula,

0:55

tutor Easter, ang ating usual reminder

0:57

muna no. So, ready, get ready and

1:00

prepare your pen and paper para sa mga

1:02

new concepts na ida-discuss natin for

1:04

this week for today. And then of course

1:07

our gadgets and of course dapat ready

1:09

tayo. Ready ang ating sariling makinig

1:11

at mat.

1:13

Okay. So ayan.

1:15

Okay. Thterina. Readingready na talaga

1:18

ang ating mga Biostar students for

1:20

today. So for attendance check, nakikita

1:23

natin sa ating mga chat box na tina-type

1:25

na nila ang kanilang pangalan, graded

1:28

section, school and location at name ng

1:31

kanilang mga teacher. Marami n

1:33

nagta-type. Tutor Tina. at please share

1:36

this live stream to others and please be

1:39

respectful with your comments. Tutor

1:42

Tina, ano nga po ba ang ating dapat na

1:44

i-recap o i-review para sa napag-aralan

1:48

nila last week?

1:50

Okay. So before that, no tutor Easter,

1:53

i-recognize muna natin yung mga naging

1:55

partner school at ating mga BiStar

1:57

student previously sa ating week five.

2:00

At napakainit kagaya ng panahon ngayon

2:03

no. Napakainit talaga ng pagtanggap nila

2:05

sa atin. So for the biostar students of

2:09

the week for week five we have Joanna

2:11

del Rosario, Alia Vinas, Sharmain

2:14

Besteros, Einley Rusta Mary Anting,

2:18

James Jo, we also have Jazel Velasco,

2:23

Austin Enriquez, hello sa aking student,

2:26

Christian Suganov, Angelica Gatiayon,

2:29

Lorine Quinto, ah Roselt Kagalingan,

2:33

Justine Fernandez, Irwin Sandoval,

2:36

Emerson,

2:38

Jess Ayan Bayani, Shila Alvarico,

2:42

Patricia Rico, Analyn Vera and Allen de

2:46

Hesus. Napakarami nating Biostar

2:48

students of the week. Tutor is her. Oo

2:51

nga po, tutor Tina, sobrang dami ating

2:54

mga biostar student. At para naman sa

2:57

ating mga bioactive school of the week

2:59

from Novalich's high school, ma'am Janet

3:01

Tamse, from Moraso Delosa Senior High

3:04

School, your truly from Lorenzo s Sar

3:07

Smiento Senior National High School,

3:09

Ma'am Norida Aali

3:13

from Padre Garcia National High School,

3:16

ma'am Ladelyn Ducay. Jones Rural School,

3:19

ma'am Shery Gumpal Reyz from San Lorenzo

3:23

Ruis Senior High School. Ma'am Chrisa

3:25

Mar

3:29

and from Maraway Integrated National

3:31

High School, Sir Jwin A. Gutierrez and

3:35

from San Mariano National High School,

3:37

Mr. Nolly El Balbin. Salamat po sa ating

3:41

mga partner school at mga bioactive

3:43

teachers po na patulong na sumusuporta

3:46

sa ating mga tutor Tina.

3:49

Okay, congratulation po and thank you.

3:51

So sana po suportahan niyo pa up to the

3:53

last two weeks. Okay. So balikan muna

3:56

natin yung discussion natin last time no

4:00

tutor Easter. So this is from the week

4:03

five basic taxonomy. Okay. So um ayan

4:07

Biostore students please ready mga

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keyboard warriors warriors natin to

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answer. Okay. So for number one, the

4:16

only domain with nucleus and membrane

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bound organels. Okay. So we have their

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biastar students. Paki po ang sagot na

4:27

one and then your answer.

4:29

Yes.

4:31

word. Yes. Ready.

4:34

Kamusta na ba ang ating chat box? Tutor

4:37

Easter.

4:40

May mga sumasagot na ba?

4:43

Puro greeting

4:46

oh. We have one answer here from Elena

4:50

Remorosa. Yaria. Tama po ba? Chutertina.

4:53

Okay. So let's see. Yes, correct. Caria

4:57

very good let's go now to number two.

5:01

Okay. Number two. He was a Swedish

5:03

botanist who devised the current

5:04

classification that we have and also the

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naming system. Okay. So please type the

5:10

number and then your answer the first

5:13

name then the last name of this Swedish

5:16

buttons. Okay. Tutor Easter. Meron na ba

5:19

tayong mga buyar students na sumasagot

5:22

sa ating chat box or ating comment

5:25

section?

5:26

We have here from Amar Alamada Sally

5:30

Carolos Nineus ang sagot niya. So tama

5:34

po baina?

5:37

Yes of course the correct answer is

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Carolus Lineus. And then based on our

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discussion last week ito yung kanyang

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Latiniz name. Okay. So let's go to

5:46

number three and last question for our

5:48

recap. Kingdom that contains

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extremophiles. Okay. Ano kaya yun? So we

5:54

have there medyo mahaba no? Okay.

5:58

Makaka-answer ba? Number three and then

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type your answers.

6:04

It contains contains all the extremo

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files.

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Okay. So

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what is your answer my dear uh biostar

6:17

students number three

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they are still

6:22

okay from sir tutor tony great day mga

6:27

kaitulay please share our live stream

6:29

para mas marami pang maabot ang online

6:32

tutorial natin salamat and happy

6:34

learning hello po tutor

6:37

hello tutor na-miss natin si tutoron

6:40

Answer na.

6:42

Oo may answer na tayo from Jemanuel

6:46

Enriquez Arc Bactia and Kalapaap.

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Is it arc bacteria?

6:53

Okay. Yes. Correct. So we have the

6:55

Kingdom Arkea Bactia. Okay very good

6:59

biostar students and thank you for

7:00

answering. Thank you for participating

7:02

in our recap. So ano nga ba ang ating

7:05

most essential learning competency for

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this week? week 6 uh tutor Easter.

7:11

So for our most essential learning

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competencies for quarter 3 week 6 is to

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describe diversity and cladistics

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including the types of evidence and

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procedures that can be used to establish

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evolutionary relationships.

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So yan ang matutunan natin for this

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session. China.

7:32

Okay. So let's start. So last week um we

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said no we talk about based on our

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discussion that systematics is abroad

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okay no malawak na study of biological

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diversity and the relationships among

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organism and for the last week we

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already discuss or talk about taxonomy

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so for this week ang aaralin naman natin

7:54

ay pyogy or pylogenetics. So what is

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pylogeny mga kaitulay? So when we say

8:00

pylogeny, this describes now

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relationship of organism as which

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organism it is thought to have evolved

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from or from which species it is most

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closely or distantly related.

8:16

Okay. So yung binibigay sa atin ng

8:17

pyogenetic relationships, it provides us

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information about the shared ancestor.

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Not only that, it also provides us kung

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ano yung mga similarities and then

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differences among living organisms.

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Okay. So paano ba natin inaaral to no?

8:35

Truter Easter at ating mga kaai. So

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biologists use a tool. They call this

8:41

tool the pyogenetic tree or the tree of

8:44

life. Ayan. So we have here example of a

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pogenetic tree and then here um it

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illustrates us or it shows us the

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evolutionary pathway and then

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connectedness among organism ba

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napakarami. We have the three main

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domain here. We have the archea, the

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bacteria and then the eucaria. Okay. So

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it has multiple lines of evidences that

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shows that this organisms are really

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related. Pero take note ano mga kaitolay

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ha that scientist consider this

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pilogenetic as hypothesis of the

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evolutionary past. Bakit hypothesis?

9:23

Anoung ibig sabihin? Because no one can

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go back in the past to confirm this

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proposed relationship. Okay. So in short

9:31

we can just reconstruct or illustrate

9:34

another pylogenetic tree in the future

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kung may mga bagong mga organisms na

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mag-i okay so in other words we can also

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represent um the relationship among

9:45

organisms in a different okay basta make

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sure na ah iyung mga characters na

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makikita natin would be the same. Yan

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ma'am Edie discuss.

9:55

Okay. So when we're looking at this,

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para lang tayong tumitingin sa ating

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geneology, right, teacher? Tutor Easter,

10:01

no? Parang twiting natin sa family tree

10:03

natin. But this time,

10:06

mm napakaraming um ah magkakarelated,

10:10

related organism. So kasi agag family

10:13

tree lang just like ours, no hindi kami

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gann kait.

10:17

Kayo ba sa inyong family, malaki ba ang

10:20

inyong family tree? Tutor Easter.

10:23

Ah yes tina marami kaming member ng

10:27

family so kami ay limang magkapatid

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tapos ang aking mother side wal silang

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magkakapatid tapos sa father side w din

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talang malaki ang aming ah family pero

10:40

pagdating sa anakakan na isa dalawa ba

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totoo yan okay so let's continue so in

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they how they construct phylog or

10:50

phylogenetic tree is that they are um

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considering characters. Okay? So these

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characters vary amongst and what are

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these characters? This can be

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morphological or anatomical features

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just like na iyung diniscuss natin last

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time ah iyung presence of bones in the

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limb or the upper limb. So sa arms ng

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human, sa wings ng birds or um 'yung

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presence ng humorous,

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humous ah ul na radius. Okay. So

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tinitingnan natin kung may may

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pagkakaiba ba? Present ba to or adsent

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ba to? Then we also have physiological

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adaptations. Let's say can we make our

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own food or we rely on other organism to

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be able to we are heterotrops. Okay? Mga

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ganon. and then molecular sequences or

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our DNA sequences and then behavioral or

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ecological. So this characters can be in

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recognizable states no mga kaidolay. So

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when you say recognizable states dapat

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makikita natin present ba siya or absent

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ba siya just like for example here let's

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say the character that we are looking

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here is the teeth inneverte.

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So in all mammals and most of our

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reptiles te are present but in birds and

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turtles, okay this teeth or the set of

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teeth is absent.

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Okay. So here in our pylogenetic tree

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before no in the past when they

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construct it they are comparing as many

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characters as possible. Okay. Parang the

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more the merrior tutor Easter. Okay.

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Kaya lang the more characters that they

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have the they think it's it's better.

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Okay? So ang nangyayari ngayon,

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organisms that have um many or more

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common characteristics or more similar

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characteristics, they become now

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neighbors of this pylogenetic tree. So

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magkalapit sila, nagiging neighbor sila.

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Let's say for example ha, we have here

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lizard and then bird. So since they are

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neighbors in thisenetic tre

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number of similarities or mas marami

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silang common characteristics as

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compared to rat and the lizard, frog and

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lizard. Okay? But if we rely mostly on

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the similarities that could be

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misleading. Okay? Kasi kung magiging

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ganun yung basis natin in classification

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then we will have an incorrect

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classification system. Why? Because

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magkakaroon tayo ng tinatawag nating

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homoplacy. So when we say homoplacy,

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homoplas is are shared characteristics

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that are not a result of common ancestry

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but of independent evolution of similar.

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So tinatawag natin ong analogo

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structures ba? So it can result from

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convergent evolution. Ayan. So i-review

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lang natinung discussion ni tutor Easter

13:57

last time about convergent evolution. So

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it happens when organism are under

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similar environmental pressure. Okay?

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Kung nasa isa parehas sila ng

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environmental pressure, they now develop

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similar adaptations or we call that nga

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the analogus structure. But um

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technically no, they're not really they

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have different ancestral linage. Yes. Ba

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hindi naman talaga sila coming from the

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same ancestor. But let's say for example

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iyung mga cave animals natin. So since

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they are of the same environmental

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pressures madilim okay they lost now

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their ability to see their eyes even

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their eyes na nawawala and also their

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pigmentations. Okay? Parang black and

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white na lang yung nakikita nila. But

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when we look at this different

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organisms, hindi naman talaga sila

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parehas ng ancestore. Okay? So they

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evolve from different central lineage.

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Okay? So let's compare now homopacy

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versus homology.

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So here in letter A we have here lizard,

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bird and maman. Okay. So if we are going

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to use homoplacy,

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we can um and then the character na

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titingnan natin dito ay yung pagkakaroon

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ng four chambered heart. So kung yun ang

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gagamitin nating character, birds and

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mamals will be neighbors. Kasi lizard

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only has three chambered heart.

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that that would be misleading kasi hindi

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naman closely related talaga si bird and

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mamals they not really coming from the

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same ancestry but lizard and bird

15:36

reptiles and a bird really are coming

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from the same ancestry so kung ah ang

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mangyayari ngayon so dapat si lizard and

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bird will will will be on the same or

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will call into neighbor magiging sila

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yung neighbors and then si mamas ngayon

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nakahiwal

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okay so ganyan po no So if we're going

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to look uh only based our classification

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system and just looking at the

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similarities, okay? Magkakaroon talaga

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tayo ng incorrect classification.

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So that's the reason why we have

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fladistics. So in cladistics, it's a way

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of classifying organisms into

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hierarchical branches based on derived

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share derived characteristics. Ano nga

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ba onong share derived characteristics

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no? I-differentiate natin because we

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also have shared ancestral character

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characteristics.

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Yes. Okay. So when we say derived

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characteristics are the similarity that

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is inherited from the most recent

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ancestor. While the ancestral

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characteristics are the similarity that

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are rol prior to the common ancestor of

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the group. So if we are going to compare

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that in a timeline si derive is new okay

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newer characteristic. So ang importante

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dito to uh differentiate them is when.

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Okay. Kailan ba nagmanifest 'yung

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characteristic na tinitingnan natin? Mas

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bago ba siya or mas lupa? Because when

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you say ancestral, this one is older.

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Okay? Those derived characters are

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newer, recent, okay? Common ancestor. So

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titingnan natin anong characters ba yung

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mas naunang nag-manifest or mas naunang

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lumabas, 'di ba? And then ano ba 'yung

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later na na characteristic na meron

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tayo. Okay. So we have here for example

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our ancestral characters the presence of

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backbone in all mammals and other

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vertebrates. Not only mamals no we have

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also here the fish, the reptile and then

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ampivian birds.

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They also have backbone. So we can say

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that this one is ancestral kasi um

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before long before pa meron na rin ong

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meron na present na rin to sa iba't

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ibang type of an while the derived

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character character here is the presence

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of hair only in mamals okay so we have

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but the presence of hair is now absent

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sa ibang type of animal so wala ng hair.

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is already absent in obivians, reptiles

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and so on. Okay. So napakaimportante na

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titingnan natin yung timeline or when

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the characteristic will be um manifested

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or ares. Okay. And then we have here two

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important terms. Simplesomorphy meaning

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that these characters are that the

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shared ancestral characters are all

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present in the members of the clay. We

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call that the same fleshomorphy but when

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the derived character is shared by the

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members of the clade we call that the

18:46

synapomorphy.

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Okay. So simplesomorphy again is the

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character the ancestral characteristic

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is shared by all the members of the

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clade while the synop synopomorphy is

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the derived character is shared by all

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the members po. So mamaya ipapakita na.

19:04

Okay. So, how do we determine ba which

19:07

one is derived aside from the time and

19:09

which one is the ancestral

19:11

characteristic? Kung let say hindi natin

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alam kung kailan no kung ilan yung time

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na lumabas yung characteristic. So

19:19

biologist use an outgoup. So what is an

19:22

outgroup? This is not part of the group

19:24

of interest. I group of interest natin

19:27

we call that the in group. But also it's

19:29

not too distantly related. hindi siya

19:31

ganon kalayong

19:33

um organism sa ico-compare natin. So the

19:36

outgroup is used to polarize the

19:38

character states or in or inchange. So

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the character state possessed by the

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outgroup is defined as a priori or

19:45

meaning before as ancestral pleasumorty.

19:51

So we have here

19:53

so after we c after we analyze the

19:56

cladistic study we have we we have now

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what we call a cladogram so a cladogram

20:04

is a three like diagram uh that

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represents the relatedness of organism

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and then the basic unit of cladogram is

20:13

what we call a clad so ito iyung

20:15

smallest yes the smallest unit that they

20:19

have this common ancestore

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ancestore

20:23

okay so let's say for example here we

20:25

have an example cladogram

20:28

and at the very bottom okay we can see

20:32

the character vertip okay so by looking

20:35

at this no we can conclude that all the

20:39

organisms endocladogram except for the

20:42

insect okay is said to be or has um

20:48

vertebra or siya lang yung vertebrate in

20:51

this study. So we can consider insects

20:54

here as an out

20:59

the outgroup will serve as a useful

21:01

comparison for the animals in our study.

21:04

Since the verde prate characteristic

21:07

um is shared by all the animals here in

21:10

our study group, we call this now the

21:14

ancestral character. Okay. Or we can

21:17

also call this as the simplesomorphy.

21:20

Okay, because this one is can be shared,

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iyung ancestor character nito is shared

21:25

by all the um organism here in ourogram

21:29

such as fish, amphivians, birds,

21:32

premians or primates and then

21:36

okay and then now next the next

21:40

character after vertebra we can see the

21:42

tetrapod. Okay. So the tatrap the fishes

21:46

the fish now branch up right here

21:48

because um among all the so wala na si

21:52

insect. So among all the animals here

21:55

siya lang yung hindi tetrapan. Okay? So

21:58

as we can see here no tutor Easter as we

22:00

move towards the upward no dito sa ating

22:03

clandograph,

22:05

yung placement natin ng organism or ng

22:08

character

22:10

confirm its relatedness to one another.

22:13

Okay. So we can say that prosimians or

22:16

what we call now the primates

22:21

I'll use the okay yung primates natin is

22:25

more closely related to humans than

22:28

birds is to humans. Okay? So actually in

22:32

in in interpreting a cladogram kung sino

22:35

yung nasa right most moun doon ka more

22:40

closely related. Okay. So let's say

22:43

birds are more closely related to

22:44

primates. Amphibians are more closely

22:46

related to birds and so on. Okay? But

22:49

it's not um it cannot be in reverse way.

22:53

So of course si humans could be um kasi

22:57

siya yung pinaka-last natin in our in

22:59

group or the study interest. So of

23:01

course humans we can say that humans is

23:03

closely or more closely related to the

23:05

primates compared to the other animals

23:08

in the group. But we cannot say

23:10

thatemians is more closely related to

23:12

amphibians to fish and so but aside from

23:16

that uh since we talk about earlier that

23:19

um this one is

23:22

hypothesis evolutionary path or

23:26

evolutionary past we can now reconstruct

23:29

it basta make sure that the characters

23:31

will fall on uh the same

23:35

um position and then nandun pa rin yung

23:38

mga characters or yung mga organism of

23:40

our study. So let's say here for example

23:43

no um dito

23:46

nakita natin na iyung iyung fish branch

23:50

up in this part but nandoon pa rin no it

23:53

falls also ah yung character pa rin

23:56

natin dito would be the so nung

23:59

tetrapods na nag-branch off na siya and

24:02

then we have here in the amniotic egg si

24:05

amphibians ay nag-brunch off na then we

24:08

have the presence of hair. Okay. Nawala

24:10

na si birds. And then the bipedal, it's

24:13

only the

24:16

so we uh it uh it's just showing to us

24:20

that we can really um write or

24:22

reconstruct uh cladogram in a different

24:25

way but make sure that the in group

24:29

okay ay nandoon pa rin siya sa tamang

24:32

characteristics.

24:34

Okay. So let's talk about now the parts

24:38

of our ladograph. Okay. So we have here

24:42

the root.

24:43

Okay. So the root is the oldest common

24:46

ancestor of all the species in our

24:49

pylogenetic.

24:51

Okay? So ayan si root. And then the

24:53

circles here denoted by um blue circles

24:57

right here is what you call the node.

24:59

Okay? So in other reference you can see

25:01

that this as the internal node. Yan

25:04

nakalagay diyan. So the nodes are where

25:06

the species branch off from the common

25:09

ancestor.

25:11

So organisms that are more closely

25:14

related share now more common share now

25:18

a common ancestor. So let's say for

25:20

example here we have the taxon 3 and

25:23

then the taxon 2. Ang common ancestor

25:27

nila itong node na to.

25:29

Okay. So we can say that taxon 2 and

25:31

taxon 3 are more closely related than

25:34

taxon 1 and taxon 3. Because they are

25:38

sharing more recent common ancesto.

25:44

Okay. So yan. So we can also say that

25:46

yung pinaka-last natin um na group we

25:50

have we call that the out group or yun

25:52

yung ipagco-compare natin sa ating mga

25:55

inoup.

25:57

Okay. So aside from that as well we have

26:01

sister groups. Okay. So when we say

26:04

sister groups this one is a pair of taxa

26:07

that are most closely related to each

26:10

other.

26:12

Okay. So than any other group pa in our

26:15

study. So here let's say for example we

26:18

have here the organism DNE as our sister

26:22

taxa okay or sister group because they

26:25

share the most uh uh they share the

26:28

common ancestor.

26:30

Yes. And no other um organism in this

26:34

cladogram share the common ancestor that

26:36

we share. Right. Okay. Uh what else?

26:40

Okay. So, sa ating mga Biostar student,

26:42

can you also can you type here? Ano pa

26:44

kaya 'yung mga sister taxa in this

26:46

diagram? Kasi only DNE lang ba ang

26:49

sister taxa dito or sister groups dito?

26:52

Okay. So ang characteristic natin, it's

26:54

a pair of taxa that are most closely

26:56

related because they share the recent

26:59

common ancestor and sila lang iyung um

27:02

groups na iyon na nagshe-share doun sa

27:04

sa ancestor. other um organism in this

27:08

cladogram share that. Sige nga ating mga

27:11

biostar students, may ano pa kayang mga

27:14

organism

27:16

we can consider sister taxa in this

27:19

diagram in this ladogram that we have?

27:23

Ayan tina may sagot tayo from Elena

27:26

Remorosa

27:28

FNG daw tama ba?

27:30

Okay. Yes correct. FNG is also a sister

27:33

tax. What else kaya? Okay. Also B and CR

27:38

sister taxa. Ayan ang gagaling. So

27:40

naiintindihan na nila yung concept of

27:43

sister taxa. Okay. Now so let's go to

27:46

another um terminologies here. So yeah.

27:50

So here aside from that no also have an

27:53

example here. So in our diagram we have

27:57

the homo or the humans. We can say from

28:01

this diagram by looking at this diagram

28:03

we can conclude that it is more closely

28:06

related to chimpany based on this

28:09

diagram because they fall on they are

28:12

sister taxa aside from that gorilla as

28:16

you can see here we have the gorilla and

28:18

then okay this common ancestor

28:22

nag-divert siya dito but

28:25

we have chimpancy and homo or the

28:28

humans. So we can also say or we can

28:30

also conclude that gorilla is a sister

28:33

taxa or in sister taxa with chimpanze

28:36

and theo.

28:39

Okay. And then we can also say that our

28:41

orangutang here is also sister taxa with

28:44

our gorilla chimpan.

28:49

Okay. So I hope that's clear for our

28:51

biostar students.

28:54

So let's go now to other way of

28:56

interpreting our cladograms. So first

28:59

one is monopiletic.

29:02

So monopiletic consist of all of the

29:04

ancestor species and all its descentant.

29:09

So mag-start muna tayo dito. Tutor

29:11

Easter. So we have here the red circle.

29:14

This one when you say red circle that is

29:15

the node and that node represent the

29:18

common ancestor. Common ancestor the

29:21

organism E and F. Okay. So if we are

29:24

going to

29:28

to encircle this one because ang sabi

29:30

naman lang dito ay consist of the

29:32

ancestor and all its descendant then we

29:35

can say that enf is also a

29:38

monopileticid.

29:40

Okay ' ba. So naano naman natin na-meet

29:42

naman natin yung standard ni monopletic.

29:44

Ang sabi lang naman niya is common

29:46

ancestor and all its descendant. And ang

29:49

descendants lang natin dito is CF. So we

29:52

we can say that this clade is a

29:54

monopyetic already. Okay. So what if we

29:57

go we choose naman itong node na to

29:59

which is also a common ancestor then if

30:02

we are talking about monopiletic lead so

30:05

dapat efng

30:08

is also a monopiletic

30:12

okay and then also this one this one is

30:15

another common ancestor and then isama

30:18

natin lahat ng kanyang descendant

30:22

also efgh is a mono No piletic.

30:28

Okay. Sa ating mga biostar students, can

30:30

you also give us example of monoetic

30:33

plate based on this diagram?

30:40

May nagta-type ba?

30:43

Okay.

30:46

So ayan.

30:47

Biar student. So shoutout sa ating mga

30:51

Biostar students from Orao Del Costa

30:54

High School, from San Mariano National

30:57

High School at sa aking co-teacher na si

31:01

ma'am Beberne Lorenzo Oman. So yan po

31:05

may 2 na may sagot na EFNG daw.

31:10

Yes, EFNG is also monopiletic group. C

31:12

and uh this one also C and D is also a

31:16

monopyic group. Okay. And then A B C and

31:20

D is also a monopiletic group. Okay so

31:23

tingnan natin yung iba no. So this one

31:25

we have the common ancestor here. Uh so

31:29

we can say that crocodile, stegosaurus,

31:31

taranosaurus,

31:33

velociraptor and hw are one of the

31:36

common or of the monopetic. So actually

31:38

ito yung talagang gusto ng cardogram

31:40

natin to have monopetic. So the common

31:42

ancestor plus all its descendant dapat

31:44

isama mo lahat ng descendants. Next we

31:47

go to parapiletic. So parapiletic tape

31:50

consist of the ancestral speci

31:57

the pharapetic.

31:59

So in our example here we have this one

32:02

is the common ancestor. This one is the

32:04

common. Well by the way let me go back.

32:07

In monopiletic you have to count kung

32:09

bibilangin mo kung ilan ang monopyetic

32:12

in the cladogram. You have you just have

32:13

to count the number of nodes. Okay? So

32:16

malalaman mo na kung ilan ang monopyetic

32:18

group in the cladogram. Okay? So going

32:20

back in our parapyic. So here hindi niya

32:23

sinama yung descendants na A and B. So

32:27

hanggang C and D lang yung sinama niya.

32:29

So that's a parapiletic.

32:31

Okay because ang kailangan mong ma-meet

32:34

and monopletic all its

32:37

in our example here. So hindi niya

32:39

sinama si Hope sinama lang niya si

32:41

stegosaurus, taronosaurus and

32:43

velocyaptor.

32:45

So yan si parapilectic group. And then

32:48

the last we have here the polypyic

32:50

group. This means that uh it includes

32:53

many species that lack common ancestor.

32:56

So wala silang common ancestor. Gusto mo

32:58

lang silang aralin. So let's say here

33:01

ang example natin ang common ancestor ni

33:05

CNB

33:06

this this node ang common ancestor ni

33:09

ENF is this node pero gusto mo silang

33:12

aralin. So that would be a polypyic

33:15

plane. Okay? You can also choose B and

33:19

let's say G.

33:21

Okay. Wala silang common ancestor. They

33:23

lock the common ancestor pero gusto mo

33:25

silang ah aralin. So you that could be a

33:29

polypiletic blade. So ang example natin

33:32

dito let's say you want to study B and

33:34

the

33:36

okay so they don't have the most recent

33:39

common ancestor kasi ang common ancestor

33:41

ni B would be this node and then si Haw

33:45

is this book. Okay. That's the

33:47

polypiletic.

33:50

type of representation. Okay. So here

33:53

since kanina nakita natin marami palang

33:54

pwedeng representation, we have now the

33:56

principle of parsimony. And ito

33:58

napakaganda na tutor Easter because the

34:00

simplest is the best ' ba. Hindi lang

34:03

pala sa beauty yan pati sa pati sa

34:06

pagre-represent ng relationship or

34:08

relatedness ng organism. We need to

34:12

choose the most simple. And the most

34:14

simple ay yung merong pinakaunting

34:16

evolutionary step. We call that now the

34:19

principle of parsimony or we call that

34:21

the most parsimons.

34:23

Okay. So let's say we have here

34:24

hypothetical three bird species. So

34:27

hypothetical because you cannot really

34:30

sure that this uh um species are really

34:33

related. So meron tayong three possible

34:36

pyogenetic three. So let's say ang

34:39

representation is 1 and 2 3 and 4 and

34:42

then the other one 1 and 3 2 and 4 and

34:45

so on. Meron tayong three pyogenetic

34:48

three. Okay? So ngayon bibilangin natin

34:50

yung evolutionary step. So dito meron

34:54

siyang eight events, dito meron siyang

34:56

nine events, dito meron siyang 10

34:58

events. So kung sino yung list number of

35:02

events, evolutionary steps, yun yung

35:05

pipiliin natin. And we call that the

35:07

most parsimot.

35:09

So the mas simple, mas maganda in terms

35:13

of classification.

35:15

Okay. And then we also have various

35:17

layouts. Meron tayong rooted 3 and

35:19

unrooted 3. When

35:21

ang difference lang nila in rooted 3, we

35:24

can see meron tayong common ancestor

35:27

here and it diverge into two lines. So

35:31

the blue lines for bacteria, green for

35:33

archea and orange for our earia. But in

35:37

unrooted biogenetic way, wala siyang

35:39

common ancestor. Pero nakikita natin

35:41

yung relatedness of one organism.

35:47

So there you go. So we now um for our

35:51

summary so systematics now focuses on

35:54

biological diversity the taxonomy and

35:56

pyogeny. And then for taxonomy we are um

35:59

focusing on the identification of

36:01

species. Uh we use the two

36:03

classification method the naming system

36:06

and then in phylog we use cadistics and

36:09

so on. Okay. So there we have it. ang

36:13

natapos na natin ang systematics tutor

36:16

Easter. Okay. So now let's go muna sa

36:19

thoughts to pander before tayo ah

36:22

mag-nowledge.

36:25

Okay. So for our thoughts to pander no

36:27

um as we end up the discussion of

36:29

systematics tutor Easter ah hindi ko I

36:33

can't help myself but to remember this

36:35

Bible verse talaga. So let me read it

36:37

from Genesis 2:1920.

36:39

Now the Lord God had formed out of the

36:41

ground all the wild animals and all the

36:43

birds in the sky. He brought them to the

36:45

man to see what he would name them. And

36:47

whatever naman each living creator that

36:50

what's its name. So the man gave names

36:52

to all the livestock, the birds in the

36:54

sky and all the wild animals. But for

36:56

Adam no suitable helper was. So itong

37:00

systematics it's not just a subject no

37:03

but pinapakita sa atin nito yung isang

37:07

purpose ni God para sa atin it is to

37:10

name yung mga ginawa niya ba so

37:13

napakalaking responsibility sa atin nito

37:15

as human being na i-explore pa kung ano

37:19

pa ba yung meron pa bang mga I

37:21

unidentified

37:23

species ano pa ba yung mga unknown

37:25

species na kailangan nating pangalan. So

37:28

napakahirap nito nung nung nasa college

37:31

pa ako, tutor Easter, itong subject na

37:33

to is napakahirap niya talagang

37:34

intindihin. So na-appreciate ko lang

37:36

siya when I'm in masters. And then right

37:38

now reading this Bible verse no na we

37:41

have this purpose. Isa napakarami nating

37:44

purpose as man is to name the creatures.

37:47

No sa lahat ng ginawa ni God ay tayo ang

37:50

responsible for that no. napakalaking ah

37:54

ano yun it's an opportunity for me

37:58

naalagaan natin ang bawat isa

38:00

yes no na na and then we can also see

38:04

here na tayo talaga yung ginawa on the

38:06

top most na hierarchy so hindi niya yan

38:09

yung responsibility na to

38:11

hindi niya ibinigay sa iba pero ibinigay

38:13

niya sa mantoning them ba napakaganda

38:17

okay so i hope we appreciate this

38:19

subject duan ko dahil tayo rin ay

38:23

nag-aalaga ' ba hinugot tayo sa ano ng

38:27

lalaki kaya tayo ay talagang

38:29

tagapangalaga din ng mga kalalakihan

38:34

bilang isang babae ' ba si

38:38

Mm yes correct yan no in the last part

38:41

of the verse nababasa natin so there we

38:44

have it so for our what's on your mind

38:48

for the week ating task for the

38:51

mga biostar students is you have to

38:54

create a three of your relatedness your

38:56

family tree and using of course your own

38:59

family so you can use your grandparents

39:01

as your common ancestors and then your

39:03

parents and then you and your sibling so

39:07

please submit your outputs on our

39:09

official itulay general biology to

39:11

Facebook page with tutor and tutor tina

39:14

until March 25 only

39:17

so there you

39:20

Ano na naman yan mga pananambigan ng

39:22

ating mga biar student. So ayan na ang

39:27

ating knowledge check mga kabar

39:29

students. Paki-type po ang inyong sagot.

39:32

one and then sagot po or the number and

39:35

then sagot po okay for knowledge check

39:38

number one the science ofadistics

39:42

produces a system for naming and

39:44

classifying organisms a true b false c

39:48

cannot tell d either a or b biost

39:53

students

39:54

sagot na type the number and then your

39:56

answer

40:00

okayartina we Have an here from Elena

40:04

Remosa is letter B. Is it letter B?

40:08

Chutartina. Yes. Letter B. It's

40:11

taxonomy. Let's go to number two.

40:15

Number two. When using a cladistic

40:17

approach to systematics, which of the

40:19

following is considered most important

40:21

for classification? A. Shared derived

40:24

character characters. B shared primitive

40:27

characters. C. Overall phenotypic

40:30

similarity. the analogus primitive

40:33

characters characters

40:36

okay so sagot student what is your

40:39

answer in number two

40:46

sin natin yan kanina

40:48

bi star student ayan ah shoutout tayo

40:53

diyan sa ating mga partner institution

40:57

so again from Elena Remorosa

41:00

letter A is it letter Aertina?

41:03

Yes, correct. So we are considering

41:05

share derived characters. Okay. For

41:07

number three,

41:09

a branching diagram that represents the

41:12

proposed pyog or evolutionary history of

41:15

a species or group. A kinship B pedigree

41:20

C genogram D cladogram.

41:23

Number three, Biostar students, please

41:25

type your answer.

41:28

Kinchip ba? So we have an answer here

41:30

from Elena again. Is it letter Dutina?

41:35

Yes, correct. It's cladogram. All right,

41:37

let's go to number four Easter.

41:41

Okay. For number four, what is a shared

41:43

derived trait? A. A trait shared by all

41:47

outgoup taxa. B a physical trait shared

41:50

by sister taxa. C a physical trait

41:53

shared by all organisms of that

41:55

particular taxon. D a recent trade

41:58

shared by all sister taxa and their most

42:01

recent out group. So what is your answer

42:04

biostar student for number four?

42:08

Is it A, B, C or D? Type na mga Byar

42:13

students.

42:19

Shoutout sa lahat ng mga nanonood sa

42:21

ating session ngayon. So we have an

42:24

answer from Ivan de Lunas. Letter B. Is

42:27

it letter B?

42:29

The correct answer is letter.

42:32

C. Okay. Shared by other in a particular

42:35

taxon. Okay. So let's have number five

42:39

on the

42:41

Okay. Which of the following species has

42:43

hair? Is it A species number four? B

42:46

species number three, C species number

42:48

two or D species

42:51

number one?

42:53

May sumasagot na ba tutor Easter sa

42:55

ating mga ating comment section?

43:01

Wala pa.

43:02

Tinan okay meron na po from Ivan Lunas

43:05

again. Is it letter D?

43:08

Okay tingnan natin. A

43:10

yes correct good. So

43:13

correct answer is letter D species A. So

43:16

kaya ng mag-interpret ng cladogram. Very

43:18

good. Allr. So now tutor Easter let's

43:22

recognize the mausay output of the week

43:25

for our week five. Okay go ahead na. So

43:30

from San Lorenzo Ruis Senior High School

43:32

Matu Driquez

43:35

congratulation Matu

43:38

from Lorenzo SR Senior National High

43:40

School from Cheska Cabanting

43:45

from Jones Rural School Whitney Lantano

43:48

and from Morasha de la Costa High School

43:51

Russell Juha

43:53

yan siguro yung mga tanim talaga nila at

43:55

alaga nila yung pinicturan

43:57

yes from Jones Rural School Charm Bister

44:02

and from Moras de la Costa High School,

44:04

Alia Isabel Golosinda

44:08

from Daniel R. Aguinaldo National High

44:10

School, Glidelo.

44:14

Jones Rural School, Johanna del Rosario

44:17

gaganda ng mga output nila 2 and from

44:20

Lorenzo Smento Senior National High

44:23

School, Amar Sally.

44:26

Okay. So there you have it.

44:28

Congratulation byar students. Ang

44:30

gaganda ng output. And this are our

44:32

references, the books and online books,

44:35

modules and online references. And also

44:38

don't forget to support other senior

44:40

high school science and technology

44:42

subjects. We have physical science, we

44:44

have empowerment technologies, DRR,

44:47

disaster readiness and risk reduction

44:49

and of course our general biology.

44:53

And for our feedback, your feedback

44:56

matters to us. So you just type that in

45:00

URLCOM et feedback form and also the QR

45:04

scan the QR code.

45:07

Very open to your feedback, comments,

45:09

complaints and all. just um yan scan

45:12

lang the QR code. So thank you so much

45:14

po for watching our online session and

45:18

up next po is ALS or alternative

45:20

learning system lifelong learning. So

45:23

again ako po ulit si Tutor Tina from San

45:25

Lorenzo Rouis Senior High School SO

45:27

Pasig. Samahan niyo po ulit kami next

45:29

week Monday same time 4:40 to 5:20 p.m.

45:34

Ako naman si tutor Easter from Horas de

45:37

la Costa High School, SDO Caloocan City.

45:40

Nag-iiwan ng mga katagang magkakaiba man

45:42

ang ating pinanggalingan, tayo ay isang

45:45

nilalang ng Diyos. Dapat tayo ay

45:47

magresetuhan at magmahalan sa bawat isa.

45:51

See you po. Thank you.

45:53

Byebye.

45:55

Byebye. தேங்கkயூ

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