articleScienceOct 31, 2019GREEN OA

Genomic architecture and introgression shape a butterfly radiation

NBNathaniel B. EdelmanPBPaul B. FrandsenMMMiriam MiyagiBCBernardo ClavijoJWJohn W. Davey

Harvard University · Brigham Young University · +25 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Butterflies. Our tests to distinguish incomplete lineage sorting from introgression indicate that gene flow has obscured several ancient phylogenetic relationships in this group over large swathes of the genome. Introgressed loci are underrepresented in low-recombination and gene-rich regions, consistent with the purging of foreign alleles more tightly linked to incompatibility loci. Here, we identify a hitherto unknown inversion that traps a color pattern switch locus. We infer that this inversion was transferred between lineages by introgression and is convergent with a similar rearrangement in another part of the genus. These multiple de novo genome sequences enable improved understanding of the importance…

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636
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112.14
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100%
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87
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Authors

29

Topics & keywords

Topics
Keywords
  • Introgression
  • Biology
  • Heliconius
  • Gene flow
  • Coalescent theory
  • Genome
  • Evolutionary biology
  • Locus (genetics)
UN Sustainable Development Goals
  • Life in Land
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