Genetic variation ________.
A) is created by the direct action of natural selection
B) arises in response to changes in the environment
C) must be present in a population before natural selection can act upon the population
D) tends to be reduced by when diploid organisms produce gametes

Question

Quizplus · Accepted Answer

Natural selection acts upon existing genetic variation in a population. Therefore, genetic variation must be present in a population before natural selection can act upon it.

Genetic Variation ________