If you were using cladistics to build a phylogenetic tree of cats...

Question

If you were using cladistics to build a phylogenetic tree of cats, which would be the best choice for an outgroup?
a. kangaroo
b. leopard
c. domestic cat
d. iguana

Accepted Answer

Welcome back. Let's look at our next problem. Which of the following is considered an out group. Let's recall what an out group is. I'll just put up a little definition here and our group is a species that diverged from all in group taxi before they diverge from each other. So when we look over at our diagram we see that species F. Over here diverged from a common ancestor before a B. C. D. And E. Diverge from each other. So A. B. C. D. And E. Can all be traced back to this common ancestor here which diverged from species F. At this point here before they differentiated from each other. Um Studies about groups can help determine the root of a philo genetic tree. You might otherwise think that this was the route, but instead you see there must have been earlier common ancestor here. Um So that lead to species app as well. So when we look at our answer choices, we see that choice C. Is species F. Which is our out group. Um We have choice A. Species A choice B. Is species D. Choice D. A. Species B. But a D. And B. All diverged from each other. Um Later on after the divergence from species F. So they are not our answers and the species that's considered an out group is choice. See species. See you in the next video

If you were using cladistics to build a phylogenetic tree of cats, which would be the best choice for an outgroup? a. kangaroo b. leopard c. domestic cat d. iguana

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