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  • Current: Oct 05, 2020

Genetic drift

Genetic drift is the change in allele frequency in a population by chance.

Public domain image of genetic drift.

Definitions in the literature

  • Change in allelic frequencies due to sampling error [1].
  • Change in allelic frequency due to chance alone [2].
  • A change in the allelic frequencies of a small population purely by chance [3].
  • The random change in the frequency of alleles in a population over successive generations due to sampling error in the gametes [4].