Biology, 09.12.2019 10:31 arias333

Dolphins are mammals and sharks are fish. they both have fins. this suggests that

dolphins and sharks inherited fins from a recent common ancestor

both dolphin and shark fins are vestigial features

dolphin and shark fins are analogous structures

a dna mutation caused some sharks to evolve into dolphins

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Dolphins are mammals and sharks are fish. they both have fins. this suggests that

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