Cited by 299Evolution and Genetic DynamicsGenetic Mapping and Diversity in Plants and AnimalsGenetic and phenotypic traits in livestock

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Population-Based Resequencing of Experimentally Evolved Populations Reveals the Genetic Basis of Body Size Variation in Drosophila melanogaster

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Abstract

Body size is a classic quantitative trait with evolutionarily significant variation within many species. Locating the alleles responsible for this variation would help understand the maintenance of variation in body size in particular, as well as quantitative traits in general. However, successful genome-wide association of genotype and phenotype may require very large sample sizes if alleles have low population frequencies or modest effects. As a complementary approach, we propose that population-based resequencing of experimentally evolved populations allows for considerable power to map functional variation. Here, we use this technique to investigate the genetic basis of natural variation in body size in Drosophila melanogaster. Significant differentiation of hundreds of loci in replicate selection populations supports the hypothesis that the genetic basis of body size variation is very polygenic in D. melanogaster. Significantly differentiated variants are limited to single genes at some loci, allowing precise hypotheses to be formed regarding causal polymorphisms, while other significant regions are large and contain many genes. By using significantly associated polymorphisms as a priori candidates in follow-up studies, these data are expected to provide considerable power to determine the genetic basis of natural variation in body size.

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Metadata

Authors
Turner, T. L., Stewart, A. D., Fields, A. T., Rice, W. R., & Tarone, A. M.
Affiliations
  • University of California, Santa Barbara (US)
  • Texas A&M University (US)
Corresponding author
Turner, Thomas L.
Venue
PLoS Genetics
Published
2011-03-17
Volume
7
Issue
3
Pages
e1001336
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2036620956
Cited by
297
References
53
Citations by year
2026: 19 · 2025: 11 · 2024: 22 · 2023: 15 · 2022: 16 · 2021: 21 · 2020: 22 · 2019: 20 · 2018: 16 · 2017: 17 · 2016: 23 · 2015: 29 · 2014: 21 · 2013: 21 · 2012: 20
FWCI
12.97
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • OakTrust (Texas A&M University Libraries) (submittedVersion)
Funders
  • Texas AgriLife Research
  • National Institutes of Health
  • University of California, Santa Barbara
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD057974)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
Keywords
body size variation, Drosophila melanogaster, experimental evolution, quantitative trait loci, polygenic inheritance, natural genetic variation, selection signatures, genome-wide association study
MeSH terms
Alleles, Animals, Chromosome Mapping, Drosophila melanogaster, Female, Gene Frequency, Genetics, Population, Genotype, Male, Phenotype, Polymorphism, Genetic, Sequence Analysis, DNA, Evolution, Molecular, Body Size, Genome-Wide Association Study

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