AP BIOLOGY

Detailed explanation-1: -Birds and dragonflies both possessing wings is an example of convergent evolution. Convergent evolution is when similar traits arise independently of one another. Birds evolved wings about 160 million years ago from tetrapod ancestors that had no wings, while insects evolved wings about 300 million years ago.

Detailed explanation-2: -The wings of a bird and the wings of an insect are evolved independently of each other. Convergent evolution is the independent development of similar traits in organisms from various periods in time or space. In convergent evolution, features from species with various ancestries are comparable.

Detailed explanation-3: -Examples of convergent evolution include the relationship between bat and insect wings, shark and dolphin bodies, and vertebrate and cephalopod eyes. Analogous structures arise from convergent evolution, but homologous structures do not.

Detailed explanation-4: -Convergent Evolution of Wings A widespread example of convergent evolution is the evolution of wings and powered flight in birds, bats and (now extinct) pterosaurs, each of which belong to a different class of organism and therefore have very distant common ancestors.