Question

Referring to the diagram above, what can be inferred about the bones of the mammals shown?
Responses
A There are no similarities among the mammal bones.There are no similarities among the mammal bones.
B They are related because they all have the same forelimb structure.They are related because they all have the same forelimb structure.
C The pattern of the bones are very similar in the mammals and could had been present in a common ancestor.The pattern of the bones are very similar in the mammals and could had been present in a common ancestor.
D These mammals lived in the same environment and experienced the same environmental pressures, therefore they must share a common ancestor.

Answer 1

C

The similar bone patterns in the forelimbs are homologous structures — they suggest descent from a common ancestor that had that basic limb plan.