Whereas homologous structures point to a similar origin and a common ancestor, analogous structures are when animals have similar structures with similar function, but they evolved separately. Examples include the wings on butterflies, bats, and birds. They're all used to fly, but the animals are not directly related.
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All mammals share the homologous structure of the vertebrae in common. For instance, in spite of its height, the giraffe has the very same number of neck bones (seven) as a giant whale and a tiny human being.
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Answer:
Whereas homologous structures point to a similar origin and a common ancestor, analogous structures are when animals have similar structures with similar function, but they evolved separately. Examples include the wings on butterflies, bats, and birds. They're all used to fly, but the animals are not directly related.