Question

a scientist argues that the hair of mammals and the feathers of birds are analogous structures. if the scientist is correct, what is the evolutionary relationship between hair and feathers?
a either hair evolved from feathers, or feathers evolved from hair.
b both hair and feathers evolved from the same structure in a common ancestor of birds and mammals.
c hair evolved in mammals at the same time as feathers evolved in birds.
d the evolution of hair in mammals occurred independently of the evolution of feathers in birds.

Explanation:

Answer:

D. The evolution of hair in mammals occurred independently of the evolution of feathers in birds