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Population variation is another term for genetic variation. Genetic variety refers to genetic variances that naturally exist among members of the same species. This variety permits a population to be more adaptable and survive in shifting environmental conditions.

Mutation, gene flow, and gene shuffling all contribute to genetic variety. The result of genetic variety is seen as a benefit. Environmental factors impact genetic variety, which increases or decreases over time.

Many factors impact genetic variation, including:

1) Genetic drift

Random variations in all forms of gene variants in a population are explained by genetic drift. Changes in allele frequencies are used to quantify these allele variants. Over time, these variants in alleles grow and decrease as a result of chance. When genetic drift occurs, alleles are either lost or gained in a population. Both of these options limit a population's genetic diversity.

2) Gene flow

In population genetics, gene flow is also known as gene migration or allele flow. Gene flow is a mechanism that allows genetic diversity to be transferred from one group to another. When the rate of gene flow is great, two populations display equal genetic diversity, resulting in the appearance of a single population. The significant function of gene flow across populations in causing mutations, migration (gene flow), genetic drift, and natural selection, all of which are active factors in biological evolution.

3) Random mating

Random mating is the process of marrying an individual an unlimited number of times, and it demonstrates the null model, which is important to population genetics. Actually, this is clearly impossible, since when each female mates a certain number of times, the population size is essentially reduced.

As a result, genetic drift, gene flow, and random mating are all processes that can impact population variation and modify allele frequencies.