The effect of chance on the fate of an allele. This genetic force primarily affects small populations. Genetic drift causes rare mutations that are present in a small population either to increase in prevalence over time or to go completely extinct.
An educational product of HOPES, not to be used in place of medical care. For more information about HOPES, click here. To contact HOPES with comments or questions, click here. Designed by Stephanie Liou. Based on Provision.