Which of these pairs of body structures BEST illustrates a homologous relationship?

A)
the leg of a horse and the leg of a dog

B)
the wing of a bat and the wing of a bird

C)
the fin of a dolphin and the fin of a shark

D)
the beak of a bird and the beak of a turtle

Question

Which of these pairs of body structures BEST illustrates a homologous relationship?

A)
the leg of a horse and the leg of a dog	

B)
the wing of a bat and the wing of a bird	

C)
the fin of a dolphin and the fin of a shark	

D)
the beak of a bird and the beak of a turtle

anonymous · Answer

A) Leg of a horse and the leg of a dog

B,C, and D are examples of convergent evolution because they are simular structures that evolved in separate places in the animal kingdom (Bats are mammals and birds are not, yet they both evolved a simular apendage).