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

Question

Quizplus · Accepted Answer

Genetic variation must exist in a population for natural selection to operate. Natural selection acts on the variation within a population, favoring traits that enhance survival and reproduction. This variation is not created by natural selection itself or in direct response to environmental changes, but can arise through mutations, gene flow, and sexual reproduction. The reduction of genetic variation during the formation of gametes in diploid organisms is not accurate; instead, processes like meiosis and sexual reproduction can contribute to genetic diversity.

Which of the Following Statements About Genetic Variation Is Accurate