In order for a population to evolve,
A) its members must have heritable genetic variation.
B) natural selection must be acting on the population.
C) all members of the population must have identical phenotypes.
D) Both a and b
E) None of the above

Question

Quizplus · Accepted Answer

In order for a population to evolve, it must have heritable genetic variation (a) for natural selection to act upon (b). Therefore, both options a and b must be present. Option c is not necessary, as it is possible for a population to have different phenotypes while still having the same genetic variation.

In Order for a Population to Evolve