AP BIOLOGY

Detailed explanation-1: -An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution.

Detailed explanation-2: -Homologous Structures Example Both a bat’s wing and a human’s arm share a similar internal bone structure, even though they look very different externally. The wing and the arm also perform different functions-wings help bats fly, while arms help humans interact with their world in a very different way.

Detailed explanation-3: -Dolphins are mammals that have live births and have fins with a homologous structure to human arms.

Detailed explanation-4: -Homologous features If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.