How does
anatomy provide evidence for Evolution? The functions of the limbs of each of the animals is illustrated differently. The bones of the limbs are arranged in a somewhat similar way in each animal. The similarity in bone structure suggests a common ancestor among the animals. Butterfly wings and bird wings both share the function to fly. The structures differ in sizes and bone placement. They are considered analogous structures because they're similar. Eye sight isn't an important adaptation to life in the deep sea cave because they can't see down there in the first place! The cave fish and the minnow do suggest a common ancestor because they look very similar. There is no evolutionary relationship between the fin of a fish and the flipper of a whale because they are
analogous structures having the same basic function, but totally different structures, therefore, it is not a
homologous structures. Another example of a
vestigial would be the muscles attached to the ear because they aren't present in a monkey's ear.
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| The anatomy of a whale |
