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Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. Once it begins, genetic drift will continue until the involved allele is either lost by a population or until it is the only allele present in a population at a particular locus.
Moreover, what is an example of genetic drift?
Genetic Drift Examples. Genetic drift is a change in the frequency of an allele within a population over time. A population of rabbits can have brown fur and white fur with brown fur being the dominant allele. By random chance, the offspring may all be brown and this could reduce or eliminate the allele for white fur.
Similarly one may ask, what are two ways genetic drift can occur?
Population bottleneck, when a population's size becomes very small very quickly, and the founder effect, when a few individuals in a population colonize a new location that is separate from the old population, are the two main types of genetic drift.
Genetic Drift and the Founder Effect. Genetic drift is the change in frequencies of alleles in a population due to chance. Hence if a fungus is abundant and widespread with copious spores capable of long distance dispersal, gene flow is likely to counteract any tendency to genetic drift.