In the figure, what does the lower interior node in each figure represent?
A) the individual that gave rise to birds and crocodilians
B) the most recent common ancestor of birds and crocodilians
C) the most recent common ancestor to all tetrapods
D) a population that would result from the hybridization of birds and crocodilians

Question

In the figure, what does the lower interior node in each figure represent? 
A) the individual that gave rise to birds and crocodilians 
B) the most recent common ancestor of birds and crocodilians 
C) the most recent common ancestor to all tetrapods 
D) a population that would result from the hybridization of birds and crocodilians

Quizplus · Accepted Answer

The lower interior node in each figure represents the most recent common ancestor of birds and crocodilians. This is the point where the two major branches of the group split and form two distinct lineages.

In the Figure, What Does the Lower Interior Node in Each