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Genetic Drift And Overpopulation Essay

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Such a small population with little or no gene flow is the perfect environment for genetic drift to be most influential. Genetic drift results in random fixation and a decline in heterozygosity; if the alleles that are fixed are not favorable the average fitness of the individual will decline. This decline in fitness caused by genetic drift is called inbreeding depression. Inbreeding will also reduce heterozygosity and increase homozygosity. In a small population, all individuals are related and they have no choice but to mate with kin, similar to what happen to the panthers in Florida.
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