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Directional selection

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In population genetics, directional selection (sometimes referred to as positive selection) occurs when natural selection favors a single allele and therefore allele frequency continuously shifts in one direction. It stands in contrast to balancing selection where selection may favor multiple alleles, or stabilizing selection which removes deleterious mutations from a population. Directional selection is a particular mode or mechanism of natural selection.


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Smallwikipedialogo.png This page uses content from the English-language version of Wikipedia. The original article was at Directional selection. The list of authors can be seen in the page history. As with Psychology Wiki, the text of Wikipedia is available under the GNU Free Documentation License.

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