Which Morphological Feature in Lizards, Mammals, and Birds Provides Evidence

Multiple Choice

Which morphological feature in lizards, mammals, and birds provides evidence of their descent from a shared ancestor?

A) ribcages positioned right behind heads in the embryonic stage
B) absence of limb buds in embryonic development
C) presence of limb buds in embryonic development
D) differences in limb structures in adults
E) vestigial hindlimbs near the base of the tail in adults