Biology

6 October, 16:45

Both ancestral birds and ancestral mammals shared a common ancestor that was a terrestrial vertebrate. today, penguins (which are birds) and seals (which are mammals) have forelimbs adapted for swimming. what term best describes the relationship of the bones in the forelimbs of penguins and seals, and what term best describes the flippers of penguins and seals?

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