The Presence of Vestigial Hip and Leg Bones in Boas

question 5

Multiple Choice

The presence of vestigial hip and leg bones in boas and pythons is considered evidence for what evolutionary link?

• A)A snake was the common ancestor for the tetrapods.
• B)Snakes have limbed ancestors.
• C)Some snake species needed limbs probably for evading predators by climbing.
• D)None,because with the new molecular genetics studies,the presence of vestigial structures is irrelevant to evolutionary biology.

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