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GENE FLOW AND SELECTION IN A CLINE
Abstract
A model of the effect of gene flow and natural selection in a continuously distributed, infinite population is developed. Different patterns of spatial variation in selective pressures are considered, including a step change in the environment, a "pocket" in the environment and a periodically varying environment. Also, the problem of the effect of a geographic barrier to dispersal is analyzed. The results are: (1) there is a characteristic length scale of variation of gene frequencies, (see PDF). The population cannot respond to changes in environmental conditions which occur over a distance less than the characteristic length. The result does not depend either on the pattern of variation in selective pressures or on the exact shape of the dispersal function. (2) The reduction in the fitness of the heterozygote causes a cline in gene frequencies to become steeper. (3) A geographic barrier to dispersal causes a drastic change in the gene frequencies at the barrier only when almost all of the individuals trying to cross the barrier are stopped.
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Citations
Cites
The genetical evolution of social behaviour. I
Hamilton, W. D. (1964) · Journal of Theoretical Biology · doi:10.1016/0022-5193(64)90038-4 · Cited by 15,725
Cited by
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Barton, N. H. (2001) · Molecular Ecology · doi:10.1046/j.1365-294x.2001.01216.x · Cited by 1,603
Kirkpatrick, M., & Barton, N. H. (1997) · The American Naturalist · doi:10.1086/286054 · Cited by 1,380
Chromosome inversions, local adaptation and speciation
Kirkpatrick, M., & Barton, N. (2006) · Genetics · doi:10.1534/genetics.105.047985 · Cited by 1,178
Ecological opportunity and the origin of adaptive radiations
YODER, J. B., CLANCEY, E., DES ROCHES, S., EASTMAN, J. M., GENTRY, L., GODSOE, W., HAGEY, T. J., JOCHIMSEN, D., OSWALD, B. P., ROBERTSON, J., et al. (2010) · Journal of Evolutionary Biology · doi:10.1111/j.1420-9101.2010.02029.x · Cited by 731
Using Environmental Correlations to Identify Loci Underlying Local Adaptation
Coop, G., Witonsky, D., Di Rienzo, A., & Pritchard, J. K. (2010) · Genetics · doi:10.1534/genetics.110.114819 · Cited by 709
Metadata
- Authors
- Slatkin, M.
- Venue
- Genetics
- Publisher
- Oxford University Press (OUP)
- Published
- 1973-12-01
- Volume
- 75
- Issue
- 4
- Pages
- 733-756
- ISSN
- 0016-6731 (ISSN-L)
- 1943-2631
- OpenAlex
- W2148101601
- Cited by
- 740
- References
- 1
- FWCI
- 5.94
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
