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In evolutionary biology, disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. In this case, the variance of the trait increases and the population is divided into two distinct groups.
Stabilizing selection (not to be confused with negative or purifying selection [1] [2]) is a type of natural selection in which the population mean stabilizes on a particular non-extreme trait value. This is thought to be the most common mechanism of action for natural selection because most traits do not appear to change drastically over time. [3]
Diversifying selection is the hypothesis that two subpopulations of a species live in different environments that select for different alleles at a particular locus. This may occur, for instance, if a species has a large range relative to the mobility of individuals within it.
disruptive selection. Also diversifying selection. A mode of natural selection in which the extreme values of a trait or phenotype within a breeding population are favored over intermediate values, causing allele frequencies to shift over time away from the intermediate. This causes the variance in the trait to increase and results in the ...
Directional selection can change the genotypic and phenotypic variation of a population and cause a trend toward one specific phenotype. [6] This selection is an important mechanism in the selection of complex and diversifying traits, and is also a primary force of speciation. [7]
Natural selection is a cornerstone of modern biology. ... Maintenance of allelic variation can also occur through disruptive or diversifying selection, ...
Some Dungeons & Dragons gamers are frustrated by new rule changes in which character traits have been "divorced from biological identity," in an apparent attempt to be more inclusive.
The genetic isolation and different associations in regional heterogeneity could be cited as evidence of diversifying selection working across entire genomes, encompassing manifestly neutral genes. They can be used to predict the long-term effects of environmental factors on genetic diversity and isolation.