Chemistry, 09.10.2020 15:01 Xlhoncho45

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
a DNA mutation caused some sharks to evolve into dolphins
dolphin and shark fins are analogous structures

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Dolphins are mammals and sharks are fish. They both have fins. This suggests that . dolphins and sh...

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