Question

Forelimbs of a man and a frog , are they homologous or analogous organs ? Give reasons for your answer . How does it help in the study of evolution?

Answer 1

Fore limbs of frog and man are Homologous organs because they seem to be built from the same basic design of bones ,but they perform different functions.
The presence of homologous forelimb in a frog,and a man indicate that all these forelimbs have evolved from a common ancestral animal which had a basic design limb . Thus, it explains that a frog and a man have evolved from a common ancestor ,Therefor the presence of homologous organs in different animals provide an evidence for evolution and that they have derived from the same ancestor with the basic design of the organ on which all the homologous organs are based.