Which of the following is an example of homoplasy? a. hair in humans and fur in mice b. astragalus ankle bones in hippos and deer c. Hox genes in humans and flies d. streamlined bodies in dolphins and ichthyosaurs

Video transcript

Hi everyone. Here's our next question. Insect wings and bird wings are examples of blank. Well here we have two structures, wings and two different species that have similar structures with similar form and function but that are not due to inheritance from a common ancestor. So the two structures arose separately, not inherited from some structure and a common ancestor. And that is an example of homo classy which is Choice A. Just like that. But let's just walk through other choices to understand why they're not correct. So Choice B. Is hm Ology which sounds similar but topology is when you have drugs, similar structures that are inherited from a common ancestor. So also similar structures but common ancestry for those structures. So you know, here's an easy one that the arm of a human in the arm of a chimpanzee obviously inherited structure from a common ancestor. So that's not our correct description here. Choice C. Is or theology or theology are homologous genetic sequences separated by a speciation event. So basically um homologous genes present in divergent species. So an example of that is the beta globe in gene in humans and chimpanzees obviously two different species but they're beta Globe in sequences virtually identical. So that gene was inherited from a common ancestor, it remained the same in those species even after they diverged. So not describing what we're looking at here and a Choice D. Is peru Ology. Pathology are homologous gene sequences due to gene duplication. So an example of that is in the mouse, the alpha and beta globe and genes which arose from a duplication of a genetic sequence in the mouse genome. So, again, not what we're looking at here, So Choice D. Is not correct. So insect wings and bird wings are examples of choice. A homo classy. See you in the next video.