AP BIOLOGY

Detailed explanation-1: -Interestingly, though bird and bat wings are analogous as wings, as forelimbs they are homologous. Birds and bats did not inherit wings from a common ancestor with wings, but they did inherit forelimbs from a common ancestor with forelimbs.

Detailed explanation-2: -Bird and Bat wings are analogous because they evolved independently. But the wing bones are homologous because they were inherited from the common ancestor.

Detailed explanation-3: -An example of this is the wings of bats and birds. These structures are homologous in that they are in both cases modifications of the forelimb bone structure of early reptiles. But birds’ wings differ from those of bats in the number of digits and in having feathers for flight while bats have none.

Detailed explanation-4: -A great example of homologous structures are the wings of a bat and the arms of a human. Bats and humans are both mammals, so they share a common ancestry. Both a bat’s wing and a human’s arm share a similar internal bone structure, even though they look very different externally.

Detailed explanation-5: -A butterfly or bird’s wings are analogous but not homologous.