Cited by 189Evolution and Genetic DynamicsFungal and yeast genetics researchLanguage and cultural evolution

Relative fitness can decrease in evolving asexual populations of S. cerevisiae

Paquin, Charlotte E., Adams, Julian·1983·Nature

Abstract

It is generally accepted from the darwinian theory of evolution that a progressive increase in population adaptation will occur in populations containing genetic variation in fitness, until a stable equilibrium is reached and/or the additive genetic variation is exhausted. However, the theoretical literature of population genetics documents exceptions where mean population fitness may decrease in response to evolutionary changes in gene frequency, due to varying selective coefficients, sexual selection or to epistatic interactions between loci. Until now, no examples of such exceptions have been documented from fitness estimates in either natural or experimental populations. We present here direct evidence that, as a result of epistatic interactions between adaptive mutations, mean population fitness can decrease in asexual evolving populations of the yeast Saccharomyces cerevisiae.

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Crossref · 10.1038/306368a0

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  • Particularly in the last 25 years, there has been an ever increasing number of ALE experiments with Escherichia coli and Saccharomyces cerevisiae being the most prominent organisms under investigation.

    “however, particularly in the last 25 years, there has been an ever increasing number of such experiments with Escherichia coli and Saccharomyces cerevisiae being the most prominent organisms under investigation [26-28].”

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Authors
Paquin, C. E., & Adams, J.
Affiliations
University of Michigan (US)
Venue
Nature
Published
1983-11
Volume
306
Issue
5941
Pages
368-371
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2029882629
Cited by
188
References
24
Citations by year
2026: 6 · 2025: 3 · 2024: 7 · 2023: 7 · 2022: 5 · 2021: 5 · 2020: 4 · 2019: 8 · 2018: 16 · 2017: 8 · 2016: 1 · 2015: 6 · 2014: 7 · 2013: 9 · 2012: 13
FWCI
1.05
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Deep Blue (University of Michigan) (acceptedVersion)
Funders
National Institute of General Medical Sciences (T32GM007544)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Social Sciences › Cultural Studies › Language and cultural evolution
Keywords
relative fitness, epistasis, asexual reproduction, Saccharomyces cerevisiae, experimental evolution, adaptive mutation, physical fitness decline, gene frequency change, selection coefficients, sexual selection
MeSH terms
Diploidy, Epistasis, Genetic, Biological Evolution, Genotype, Haploidy, Mutation, Reproduction, Asexual, Saccharomyces cerevisiae, Genetic Variation

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