Question

Which of the following would provide the best evidence that Species A and Species B have a common ancestor?
A.
The limbs of Species A perform a function that is similar to the limbs of Species B, but they have a different structure.
B.
Species A has limbs, and Species B does not have limbs.
C.
The limbs of Species A have a similar structure to the limbs of Species B, but they perform a different function.
D.
The limbs of Species A and Species B have a different structure and function.

Answer 1

C

Similar structure with different functions indicates homologous structures, which are best explained by common ancestry.