Genetic drift

Revision as of 10:38, 17 December 2008 by Honee_v (Talk | contribs) (definition, supplement, internal links)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Definition

noun

The process of change in the genetic composition of a population due to chance or random events rather than by natural selection, resulting in changes in allele frequencies over time.


Supplement

The effect of genetic drift in large populations is usually negligible whereas in small populations, it predominates. In a small population, genetic drift results in some alleles become more common while others become less common over time.


Compare: natural selection

Retrieved from "http://www.biology-online.org/bodict/index.php?title=Genetic_drift&oldid=95316"
First | Previous (Genetic diversity) | Next (Genetic engineering) | Last
Advertisement
Please contribute to this project, if you have more information about this term feel free to edit this page.