Genetic Variation Has Two Sources-Mutation And

Question

Genetic variation has two sources-mutation and:
A)recombination.
B)natural selection.
C)genetic drift.
D)non-random mating.
E)cell division.

Accepted Answer

While natural selection, genetic drift, non-random mating, and cell division can all affect the distribution of genetic variation within a population, they do not create new genetic variation. Mutation is the only process that introduces new genetic variation into a population, and therefore is the correct answer. Recombination (the shuffling of genetic material during sexual reproduction) can also contribute to genetic variation, but it relies on the existence of pre-existing genetic variation that is being recombined rather than creating new variation itself.