Variation is usually introduced by the process of _________?

a. random fertilization

b. mutation

c. random mating

d. recombination between homologous chromosomes during meiosis

e. all of the above


Answer is e. all of the above

Rationale: Variation occurs when one gene in the organism is mutated. (This can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Biology & Microbiology

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