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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Genetic variation in niche construction: implications for development and evolutionary genetics.

Julia B Saltz1, Sergey V Nuzhdin1

  • 1Molecular and Computational Biology, University of Southern California, 1050 Childs Way RRI 316, Los Angeles, CA 90089, USA.

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Genetic variation in niche construction influences organismal evolution. This variation links genotypes to environments, impacting heritability and genetic interactions in phenotypically plastic traits.

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Area of Science:

  • Evolutionary Genetics
  • Ecology
  • Behavioral Ecology

Background:

  • Niche construction, where organisms modify their environments, has traditionally focused on fixed traits within populations.
  • Emerging evidence highlights that niche-constructing traits can vary among genotypes within a population.

Purpose of the Study:

  • To explore the implications of genetic variation in niche construction for evolutionary genetics.
  • To understand how genetic variation in niche-constructing traits affects the relationship between genotype and environment.

Main Methods:

  • Theoretical consideration of genetic variation in niche-constructing traits.
  • Analysis of how this variation impacts inferences about heritability, pleiotropy, and epistasis in phenotypically plastic traits.

Main Results:

  • Genetic variation in niche construction establishes a genotype-environment correlation.
  • This correlation can alter established inferences about heritability, pleiotropy, and epistasis for plastic traits.

Conclusions:

  • Genetic variation in niche construction offers novel mechanisms influencing evolutionary trajectories.
  • Understanding genotype-environment correlations is crucial for accurate evolutionary genetic predictions.