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← Older revision		Revision as of 04:48, 18 February 2025
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	[[Category:Population]]		[[Category:Population]]
	{{Genetics-stub}}		{{Genetics-stub}}
			<gallery>
			File:Synergistic_versus_antagonistic_epistasis.svg\|Synergistic versus antagonistic epistasis
			File:Drosophila_melanogaster_-_side_(aka).jpg\|Drosophila melanogaster - side view
			File:Gene_flow_final.png\|Gene flow
			File:Greatwall_large.jpg\|Population genetics
			File:Tree_Of_Life_(with_horizontal_gene_transfer).svg\|Tree Of Life with horizontal gene transfer
			</gallery>

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2024-03-02T14:56:33Z

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'''Population genetics''' is a subfield of [[genetics]] that deals with genetic differences within and between [[population]]s, and is a part of [[evolutionary biology]]. Studies in this branch of biology examine such phenomena as [[adaptation]], [[speciation]], and [[population structure]].

== History ==

Population genetics was a vital ingredient in the emergence of the [[modern evolutionary synthesis]]. Its primary founders were [[Sewall Wright]], [[J.B.S. Haldane]] and [[Ronald Fisher]], who also laid the groundwork for the related discipline of [[quantitative genetics]].

== Genetic variation ==

[[Genetic variation]] is the basis for most evolutionary change and is therefore a central concept in population genetics. Genetic variation is caused by [[mutation]], [[gene flow]] between populations, and [[sexual reproduction]].

== Genetic drift ==

[[Genetic drift]] is a change in allele frequency in a population, due to random sampling. The effects of genetic drift are most pronounced in small populations, where chance events can have a large impact on the genetic makeup of the population.

== Natural selection ==

[[Natural selection]] is the process by which certain heritable traits—those that make it more likely for an organism to survive and successfully reproduce—become more common in a population over successive generations.

== Gene flow ==

[[Gene flow]] is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent allele frequencies and therefore effectively be a single population.

== Mathematical models ==

The field of population genetics is heavily reliant on mathematical models, which describe the effects of various forces on the distribution of genetic variants within and between populations.

== See also ==

* [[Evolutionary biology]]
* [[Genetic drift]]
* [[Natural selection]]
* [[Gene flow]]
* [[Genetic variation]]

== References ==

{{reflist}}

[[Category:Genetics]]
[[Category:Evolutionary biology]]
[[Category:Population]]
{{Genetics-stub}}

Population genetics - Revision history

Prab: CSV import

Prab: CSV import