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Evolution: Comparing Penguins and Whales

APBIO-WHNVNK

Modern birds and mammals share an ancient common ancestor that was terrestrial, but penguins and whales both have limbs adapted for swimming.

Which of the following terms BEST describes the relationship between the bones in the forelimbs of penguins and whales?

A

Homologous structures.

B

Analogous strutures.

C

Vestigial organs.

D

Convergent evolution.