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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 ...
In positive frequency-dependent selection the fitness of a phenotype increases as it becomes more common. In negative frequency-dependent selection the fitness of a phenotype decreases as it becomes more common. For example, in prey switching, rare morphs of prey are actually fitter due to predators concentrating on the more frequent morphs. As ...
This was translated by Theodosius Dobzhansky and appeared in English as Factors of Evolution: The Theory of Stabilizing Selection in 1949. [4] On 23 August 1948 he became victim of order 1208, one of a series signed by Minister of Higher Education in the USSR, Sergei Kaftanov , which led to the mass dismissals of many university professors ...
In natural selection, negative selection [1] or purifying selection is the selective removal of alleles that are deleterious. This can result in stabilising selection through the purging of deleterious genetic polymorphisms that arise through random mutations. [2] [3]
Disruptive selection is a specific type of natural selection that actively selects against the intermediate in a population, favoring both extremes of the spectrum. Disruptive selection is inferred to oftentimes lead to sympatric speciation through a phyletic gradualism mode of evolution. Disruptive selection can be caused or influenced by ...
In a move that could supercharge the government's deportation forces, the Trump administration late Thursday deputized thousands more federal law enforcement officers to arrest immigrants in the ...
President Donald Trump's administration told the U.S. Supreme Court on Friday that Tennessee's Republican-backed ban on gender-affirming medical care for transgender minors is not unlawful ...
A good periodized plan varies exercise selection, intensity, and frequency based on those factors. “Although it is valuable for almost everyone, strength training is not a one-size-fits-all ...