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Genetic drift

Genetic drift is the term used in population genetics to refer to the statistical drift over time of gene frequencies in a population due to random sampling effects in the formation of successive generations.

In a narrower sense, genetic drift refers to the expected population dynamics of neutral alleles (those defined as having no positive or negative impact on reproductive fitness), which are predicted to eventually become fixed at zero or 100% frequency in the absence of other mechanisms affecting allele distributions.

Note: This article excerpts material from the Wikipedia article "Genetic drift", which is released under the GNU Free Documentation License.

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last updated on 2014-10-01 at 7:06 pm EDT

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