Cited by 336Evolution and Genetic DynamicsPhilosophy and History of ScienceLanguage and cultural evolution

Mutational robustness can facilitate adaptation

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Draghi, Jeremy A., Parsons, Todd L., Wagner, Günter P., Plotkin, Joshua B.·2010·Nature

Abstract

Robustness seems to be the opposite of evolvability. If phenotypes are robust against mutation, we might expect that a population will have difficulty adapting to an environmental change, as several studies have suggested. However, other studies contend that robust organisms are more adaptable. A quantitative understanding of the relationship between robustness and evolvability will help resolve these conflicting reports and will clarify outstanding problems in molecular and experimental evolution, evolutionary developmental biology and protein engineering. Here we demonstrate, using a general population genetics model, that mutational robustness can either impede or facilitate adaptation, depending on the population size, the mutation rate and the structure of the fitness landscape. In particular, neutral diversity in a robust population can accelerate adaptation as long as the number of phenotypes accessible to an individual by mutation is smaller than the total number of phenotypes in the fitness landscape. These results provide a quantitative resolution to a significant ambiguity in evolutionary theory.

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  • An experimental E. coli culture could evolve the ability to aerobically utilize citrate, or the ability to use the non-natural carbon source 1,2-propanediol; also, a strain deficient in glutathione biosynthesis was able to develop compensatory mutations to restore this function.

    “For example, an experimental E. coli culture could evolve the ability to aerobically utilize citrate [37], or the ability to use the non-natural carbon source 1,2-propanediol [71]; also, a strain deficient in glutathione biosynthesis was able to develop compensatory mutations to restore this function [147].”

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Authors
Draghi, J. A., Parsons, T. L., Wagner, G. P., & Plotkin, J. B.
Affiliations
  • University of Pennsylvania (US)
  • Yale University (US)
Corresponding author
Plotkin, Joshua B.
Venue
Nature
Published
2010-01
Volume
463
Issue
7279
Pages
353-355
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2012457691
Cited by
336
References
37
Citations by year
2026: 7 · 2025: 11 · 2024: 12 · 2023: 6 · 2022: 12 · 2021: 16 · 2020: 12 · 2019: 15 · 2018: 30 · 2017: 21 · 2016: 24 · 2015: 32 · 2014: 37 · 2013: 16 · 2012: 32
FWCI
18.19
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Institute of Allergy and Infectious Diseases (U54AI057168)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Social Sciences › Arts and Humanities › History and Philosophy of Science › Philosophy and History of Science
  • Social Sciences › Cultural Studies › Language and cultural evolution
Keywords
mutational robustness, evolvability, adaptation, fitness landscape, population size, mutation rate, population genetic models, environmental change
MeSH terms
Adaptation, Physiological, Biological Evolution, Genetics, Population, Genotype, Models, Genetic, Mutation, Phenotype, Population Density, Time Factors, Genetic Variation, Mutagenesis, Genetic Fitness

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