Natural selection cannot make an elephant run as fast as a cheetah and fly like a bird. This is an example of
A) a correlated response to selection.
B) disequilibrium.
C) physical constraints on natural selection.
D) fixation.

Question

Quizplus · Accepted Answer

Natural selection is limited by the physical constraints of an organism's body and existing genetic variation. An elephant's body and genetics have not evolved for speed or flight, so natural selection cannot make it run as fast as a cheetah or fly like a bird. This is an example of physical constraints on natural selection.

Natural Selection Cannot Make an Elephant Run as Fast as a Cheetah