Although reptiles and birds have many differences in terms of movement, there are also many similarities in their bone structure and arrangement in each limb. This cladogram compares the bones from each animal, as well as the lobe-finned fish hypothesized to be the common ancestor of each animal. What conclusion can be drawn from the evidence presented in this cladogram?
a
Birds are more closely related to fish than to reptiles.
b
Birds and reptiles experienced a recent genetic drift, causing their speciation.
c
Birds and reptiles share homologous structures in their skeletons.
d
Birds and reptiles share the same DNA sequence.