Question

Name two homologous structures in vertebrates . Why they are called so? How do such organ helped in understanding an evolutionary relationship

Answer 1

Example of homologous structures in vertebrates - Limbs of birds, mammals, amphibians and reptiles

They are so called since they have similar basic structural plan, but appear different externally and perform different function. However they have evolved from a common ancestor.

Such a homologous characteristic helps to identify an evolutionary relationship between apparently different species.