Cited by 1,199Evolution and Genetic DynamicsRNA and protein synthesis mechanismsGenomics and Phylogenetic Studies

A constant rate of spontaneous mutation in DNA-based microbes.

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Drake, J W·1991·Proceedings of the National Academy of Sciences

Abstract

In terms of evolution and fitness, the most significant spontaneous mutation rate is likely to be that for the entire genome (or its nonfrivolous fraction). Information is now available to calculate this rate for several DNA-based haploid microbes, including bacteriophages with single- or double-stranded DNA, a bacterium, a yeast, and a filamentous fungus. Their genome sizes vary by approximately 6500-fold. Their average mutation rates per base pair vary by approximately 16,000-fold, whereas their mutation rates per genome vary by only approximately 2.5-fold, apparently randomly, around a mean value of 0.0033 per DNA replication. The average mutation rate per base pair is inversely proportional to genome size. Therefore, a nearly invariant microbial mutation rate appears to have evolved. Because this rate is uniform in such diverse organisms, it is likely to be determined by deep general forces, perhaps by a balance between the usually deleterious effects of mutation and the physiological costs of further reducing mutation rates.

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Crossref · 10.1073/pnas.88.16.7160

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Authors
Drake, J. W.
Affiliations
National Institutes of Health (US)
Corresponding author
Drake, J W
Venue
Proceedings of the National Academy of Sciences
Published
1991-08-15
Volume
88
Issue
16
Pages
7160-7164
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1977852064
Cited by
1,199
References
56
Citations by year
2026: 20 · 2025: 19 · 2024: 50 · 2023: 47 · 2022: 26 · 2021: 41 · 2020: 41 · 2019: 38 · 2018: 50 · 2017: 45 · 2016: 41 · 2015: 38 · 2014: 53 · 2013: 37 · 2012: 51
FWCI
9.14
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • 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 › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
spontaneous mutation rate, genome size, haploid organisms, bacteriophages, yeast, filamentous fungi, mutation rate evolution
MeSH terms
Base Composition, Coliphages, DNA, Bacterial, DNA, Fungal, DNA, Viral, Escherichia coli, Biological Evolution, Genes, Bacterial, Genes, Fungal, Genes, Viral, Mutation, Neurospora crassa, Bacteriophage lambda, Saccharomyces cerevisiae, Species Specificity, T-Phages

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