Cited by 989Evolution and Genetic DynamicsGenetic and phenotypic traits in livestockAnimal Behavior and Reproduction

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

The Effect of Selection on Genetic Variability

Bulmer, M. G.·1971·The American Naturalist

Abstract

If a metric character is determined by an effectively infinite number of loci, selection cannot cause any permanent change in the genetic variance but will cause a temporary change which is rapidly reversed when selection ceases. This change is due entirely to the correlation between pairs of loci which is induced by selection; the correlation is negative, leading to a reduction in the genetic variance under stabilizing or directional selection, and is positive, leading to an increase in the variance under disruptive selection. When selection ceases, the correlation rapidly disappears as joint equilibrium at pairs of loci is reestablished, and the variance returns to its original value. An expression is derived for the predicted amount of change in the genetic variance due to disequilibrium in the absence of linkage. The change is likely to be small under selection intensities found under natural conditions, but it may be appreciable under intense artificial selection. This limiting result shows that the magnitude of any permanent change in the variance due to selection must decrease as the number of loci involved increases and that, when the number of loci is large, it is likely to be much less than the temporary change due to disequilibrium.

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Crossref · 10.1086/282718

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Metadata

Authors
Bulmer, M. G.
Corresponding author
Bulmer, M. G.
Venue
The American Naturalist
Published
1971-05
Volume
105
Issue
943
Pages
201-211
ISSN
  • 0003-0147 (ISSN-L)
  • 1537-5323
OpenAlex
W1965190303
Cited by
989
References
3
Citations by year
2026: 37 · 2025: 28 · 2024: 36 · 2023: 33 · 2022: 39 · 2021: 43 · 2020: 42 · 2019: 43 · 2018: 19 · 2017: 31 · 2016: 23 · 2015: 22 · 2014: 26 · 2013: 25 · 2012: 26
FWCI
2.75
Type
journal article
Language
en
Open access
closed
Locations
The American Naturalist (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
Keywords
genetic variance, selection, stabilizing selection, directional selection, diversifying selection, selective breeding, number of loci, quantitative genetics

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