Of the following anatomical structures, which is homologous to the bones in the wing of a bird?
A) cartilage in the dorsal fin of a shark
B) bones in the hind limb of a kangaroo
C) chitinous struts in the wing of a butterfly
D) bony rays in the tail fin of a flying fish
E) bones in the flipper of a whale

Question

Quizplus · Accepted Answer

The bones in the flipper of a whale are homologous to the bones in the wing of a bird as both are used for propelling through a fluid medium (water and air, respectively). While the other structures listed may have similar functions, they are not homologous to the bird wing bones.

Of the Following Anatomical Structures, Which Is Homologous to the Bones