Which statements describe homologous structures? Select three options.An example of a homologous structure is the wing of a bird and an insect.An example of a homologous structure is the forelimb of a whale, a human, and a dog.Homologous structures have the same function but a different structure.Homologous structures have the same structure, but may have a different function.Homologous structures indicate a common ancestor.Homologous structures do not indicate a common ancestor.

Homologous structures share an underlying anatomy because they were inherited from a common ancestor, even if they now serve different functions. The forelimbs of whales, humans, and dogs have the same basic bone arrangement, so B is correct; D describes the possible difference in function, and E describes what the shared anatomy indicates. Bird and insect wings are analogous structures: they perform a similar function but do not share the same underlying structure from a common ancestor.

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