What is suggested by the similarity of early embryos of...

What is suggested by the similarity of early embryos of different species of vertebrates? * evolution from a distant common ancestor no evolutionary relationship between the groups similar environments in the past recent common ancestry Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as * vestigial structures. analogous structures. homologous structures. fossil structures. If an organism has a vestigial structure, that structure likely once had a function in a(n) * close relative. early ancestor. unrelated organism. embryological stage.

Transcript

00:01 Hello, so let's answer now the question.

00:02 So let's have the part one of this question.

00:05 In part one, we are asked what is suggested if the embryos of different vertebrates has similarity? so we have here different vertebrates.

00:28 Okay, this vertebrates can be mammal, can be mammals, can be birds, can be reptiles.

00:45 Can be fish okay now if we will look on their embryos we see a similarity there are similarities among these embryos what this similarity suggests our answer here it suggests a it suggests a evolution okay it suggests that it suggests that it suggests that are related okay evolution from a distant common ancestor so they have a distant common ancestor especially the vertebrates okay so it it is not uh an evidence of no evolution since they are similar there is a similarity therefore there is evolution okay and it's not about the similar environments in the past as you can see this vertebrae are really diverse so it's not about the similarity of the environment and it's not a recent common ancestry okay because this vertebrates belong to different classes therefore it's not about recent common ancestry but it is about a distant common ancestry or distant common ancestor so this is our answer for part one okay so let's proceed for part two okay so for the second question it says here that these organisms do share a common ancestor.

02:46 So the premise here is they have common ancestors.

02:57 And they have features that have different functions.

03:06 Features that have different functions.

03:20 And i said from that, the structures of these features are.

03:29 Similar what is this okay so basically this is what we call convert divergent evolution okay so it is what we call divergent evolution wherein they are having a common ancestors yet even they have common ancestors there are differences in the functions of the features that they have but if you will look on the structures of those features, even there are different functions, the structures are similar.

04:11 And this structure is what we call homologous structure.

04:18 So our answer here is we have homologous structures.

04:22 Homologous structures are evidence of divergent evolution.

04:30 Okay...

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