Cited by 745Genetic diversity and population structureEvolution and Genetic DynamicsChromosomal and Genetic Variations

Variation in gene expression within and among natural populations

Oleksiak, Marjorie F., Churchill, Gary A., Crawford, Douglas L.·2002·Nature Genetics

Abstract

Evolution may depend more strongly on variation in gene expression than on differences between variant forms of proteins. Regions of DNA that affect gene expression are highly variable, containing 0.6% polymorphic sites. These naturally occurring polymorphic nucleotides can alter in vivo transcription rates. Thus, one might expect substantial variation in gene expression between individuals. But the natural variation in mRNA expression for a large number of genes has not been measured. Here we report microarray studies addressing the variation in gene expression within and between natural populations of teleost fish of the genus Fundulus. We observed statistically significant differences in expression between individuals within the same population for approximately 18% of 907 genes. Expression typically differed by a factor of 1.5, and often more than 2.0. Differences between populations increased the variation. Much of the variation between populations was a positive function of the variation within populations and thus is most parsimoniously described as random. Some genes showed unexpected patterns of expression--changes unrelated to evolutionary distance. These data suggest that substantial natural variation exists in gene expression and that this quantitative variation is important in evolution.

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Crossref · 10.1038/ng983

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Authors
Oleksiak, M. F., Churchill, G. A., & Crawford, D. L.
Affiliations
  • University of Missouri–Kansas City (US)
  • Jackson Laboratory (US)
Corresponding author
Crawford, Douglas L.
Venue
Nature Genetics
Published
2002-09-03
Volume
32
Issue
2
Pages
261-266
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2111696544
Cited by
736
References
29
Citations by year
2026: 4 · 2025: 7 · 2024: 15 · 2023: 8 · 2022: 7 · 2021: 59 · 2020: 20 · 2019: 12 · 2018: 17 · 2017: 24 · 2016: 13 · 2015: 25 · 2014: 31 · 2013: 29 · 2012: 29
FWCI
26.28
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
gene expression variation, natural genetic variation, Fundulus, teleosts, genetic differentiation, mRNA expression, quantitative genetic variation, gene expression evolution
MeSH terms
Analysis of Variance, Phylogeny, RNA, Messenger, Genetic Variation, Gene Expression, Fundulidae

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