Birds and humans are theorized to have a common ancestor because they have homologous structures.Which evidence best supports this theory?

Homologous structures are similarities inherited from a common ancestor, even if they develop into different structures in adults. Birds and humans both form tails during embryonic development, which is evidence of a shared developmental pattern. Vestigial structures can also reflect ancestry, but the choice that directly identifies a shared feature is “They both have tails as embryos.”

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