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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Genome evolution is surprisingly predictable after initial hybridization.

Quinn K Langdon1,2,3, Jeffrey S Groh4, Stepfanie M Aguillon1,2,5

  • 1Department of Biology, Stanford University.

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|January 8, 2024
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Summary
This summary is machine-generated.

Hybridization outcomes are repeatable, with natural selection driving consistent genetic patterns across independent fish populations. This stability in ancestry over generations highlights the predictable impact of selection following hybridization.

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Area of Science:

  • Evolutionary Biology
  • Genomics
  • Speciation

Background:

  • Hybridization, or genetic exchange between species, is common across the tree of life.
  • Genomes of many species contain DNA from related species, raising questions about repeatability and natural selection's role.
  • Limited empirical systems have hindered the study of genomic outcomes in hybridization.

Conclusions:

  • Genomic outcomes of hybridization are remarkably repeatable, even in demographically independent populations.
  • Natural selection plays a crucial role in shaping and stabilizing local ancestry patterns post-hybridization.
  • Greater evolutionary divergence between parental species leads to stronger selection and increased repeatability in hybrid genomes.