In studying humans, whales, and horses, which of the following set of similarities would be evidence for the most recent common ancestor?
A. They all have hair
B. They all have internal skeletons.
C. They are all mammals.
D. They all have similar bones in their limbs
BE RIGHT OR I WILL FIGHT ;)
D. They all have similar bones in their limbs
This set of similarities would be evidence for the most recent common ancestor because it is a more specific trait that is shared among these three groups. The presence of similar bones in their limbs suggests a common evolutionary history and ancestry.