The presence of vestigial hip and leg bones in boas and pythons is considered evidence for what evolutionary link?
A) Snakes have limbed ancestors.
B) Some snake species needed limbs-probably for evading predators by climbing.
C) A snake was the common ancestor for the tetrapods.
D) None, because with the new molecular genetics studies, the presence of vestigial structures is irrelevant to evolutionary biology.
Correct Answer:
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