The original source of genetic variation that serves as the raw material for natural selection is ________.
A)mutation
B)gene flow
C)geographic isolation
D)random fertilization

Question

Quizplus · Accepted Answer

Mutation is the primary source of genetic variation, introducing new alleles into a population's gene pool. Gene flow can introduce new alleles too, but it is not the original source. Geographic isolation and random fertilization do not create new genetic variation within a population.

The Original Source of Genetic Variation That Serves as the Raw