Final answer:
The correct answer is that the bones in the wings of birds and bats are homologous due to a common ancestor, but the wings themselves are homoplastic traits, as they are similar due to convergent evolution, not common ancestry.
Step-by-step explanation:
The bones in the wings of birds and bats are homologous because they derived from a common ancestor, while the wings are homoplastic traits. This means that while the structures of their wings are derived from the same ancestral origin (making them homologous), the wings themselves have adapted to similar functions due to convergent evolution, but they did not inherit this trait from a common ancestor, hence they are homoplastic. Bats and birds share a common evolutionary past which is evident in the similar structures of their bones. However, their wing structures are different because, although they serve the same function (flight), they evolved independently in bats and birds and are an example of convergent evolution. It's important to note that the wings of insects, such as bees, are not homologous to those of bats and birds because they have a different structure and embryonic origin, making them analogous but not homologous.