Cited by 1,076Evolution and Genetic DynamicsGenetic diversity and population structureForensic and Genetic Research

The “hitchhiking effect” revisited

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Kaplan, N L, Hudson, R R, Langley, C H·1989·Genetics

Abstract

The number of selectively neutral polymorphic sites in a random sample of genes can be affected by ancestral selectively favored substitutions at linked loci. The degree to which this happens depends on when in the history of the sample the selected substitutions happen, the strength of selection and the amount of crossing over between the sampled locus and the loci at which the selected substitutions occur. This phenomenon is commonly called hitchhiking. Using the coalescent process for a random sample of genes from a selectively neutral locus that is linked to a locus at which selection is taking place, a stochastic, finite population model is developed that describes the steady state effect of hitchhiking on the distribution of the number of selectively neutral polymorphic sites in a random sample. A prediction of the model is that, in regions of low crossing over, strongly selected substitutions in the history of the sample can substantially reduce the number of polymorphic sites in a random sample of genes from that expected under a neutral model.

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Crossref · 10.1093/genetics/123.4.887

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  1. KINGMAN, J. F. C., 1982 The coalescent. Stochast. Proc. Appl. 13: 235-248.

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Authors
Kaplan, N. L., Hudson, R. R., & Langley, C. H.
Affiliations
National Institute of Environmental Health Sciences (US)
Venue
Genetics
Published
1989-12-01
Volume
123
Issue
4
Pages
887-899
ISSN
  • 0016-6731 (ISSN-L)
  • 1943-2631
OpenAlex
W1932538605
Cited by
1,076
References
19
Citations by year
2026: 10 · 2025: 15 · 2024: 32 · 2023: 25 · 2022: 29 · 2021: 32 · 2020: 33 · 2019: 32 · 2018: 37 · 2017: 30 · 2016: 32 · 2015: 37 · 2014: 33 · 2013: 47 · 2012: 41
FWCI
5.47
Type
journal article
Language
en
Open access
Locations
  • Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
Keywords
linked selection, neutral polymorphism, coalescent, recombination, crossing over, finite population model, stationary distribution, selection strength
MeSH terms
Base Sequence, Biological Evolution, Gene Frequency, Genetic Linkage, Models, Theoretical, Molecular Biology, Selection, Genetic

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