| Literature DB >> 31672890 |
Nathaniel B Edelman1, Paul B Frandsen2,3, Michael Miyagi4, Bernardo Clavijo5, John Davey6,7, Rebecca B Dikow3, Gonzalo García-Accinelli5, Steven M Van Belleghem8, Nick Patterson9,10, Daniel E Neafsey10,11, Richard Challis12, Sujai Kumar13, Gilson R P Moreira14, Camilo Salazar15, Mathieu Chouteau16, Brian A Counterman17, Riccardo Papa8,18, Mark Blaxter12, Robert D Reed19, Kanchon K Dasmahapatra6, Marcus Kronforst20, Mathieu Joron21, Chris D Jiggins7, W Owen McMillan22, Federica Di Palma5, Andrew J Blumberg23, John Wakeley4, David Jaffe10,24, James Mallet1.
Abstract
We used 20 de novo genome assemblies to probe the speciation history and architecture of gene flow in rapidly radiating Heliconius 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 of introgression and selective processes in adaptive radiation.Entities:
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Year: 2019 PMID： 31672890 PMCID： PMC7197882 DOI： 10.1126/science.aaw2090
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728