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Homology

APBIO-VMKGWJ

Homology (the modern term synapomorphy is also used) refers to similarities in structures due to a shared common ancestor. The term was first used by 19th-century anatomist Robert Owen, although he did not use the word in an evolutionary context. Charles Darwin proposed that similarities in structure were due to a common ancestor that shared the trait and used homology as evidence for evolution.

Which of the following is an example of homology?

A

Dorsal fins of sharks and dolphins.

B

Feathers of different bird species.

C

Walking on two legs in birds and humans.

D

Wings in birds and bats.