LIFE SCIENCE

Detailed explanation-1: -When two or more organs or structures are basically similar to each other in construction but are modified to perform different functions, they are said to be serially homologous. An example of this is a bat’s wing and a whale’s flipper.

Detailed explanation-2: -A classic example of homologous structures is that of the wing of a bat and the arm of a human. Both have similar internal bone structure, and as mammals, the evolutionary origin is clearly similar.

Detailed explanation-3: -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.

Detailed explanation-4: -The wing of a bat and the human arm both possess a radius, an ulna and phalanges.

Detailed explanation-5: -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.