Abstract

As we uncover the ubiquity of hybridization in nature, determining how natural selection acts on hybrids has newfound importance for speciation. A study in PLOS Biology uses threespine stickleback to detect a genomic signature of ecological incompatibilities.

Highlights

  • As we uncover the ubiquity of hybridization in nature, determining how natural selection acts on hybrids has newfound importance for speciation

  • A long-standing goal in evolutionary biology is to understand how natural selection acts on hybrids and assess how often selection against hybrids can contribute to reproductive isolation among species

  • If the genetic architecture of ecological divergence is largely additive, trait mismatches may not manifest until recombination and independent assortment have reshuffled alleles to create individuals with alternate homozygous ancestry at 2 or more loci

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Summary

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The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. As we uncover the ubiquity of hybridization in nature, determining how natural selection acts on hybrids has newfound importance for speciation. A study in PLOS Biology uses threespine stickleback to detect a genomic signature of ecological incompatibilities

Selection against hybrids takes many forms
Identifying the genomic signatures of ecological incompatibilities
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