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Sökning: WFRF:(Edelman Nathaniel)

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  • Holt, Carson, et al. (författare)
  • Improved Genome Assembly and Annotation for the Rock Pigeon (Columba livia)
  • 2018
  • Ingår i: G3. - : GENETICS SOCIETY AMERICA. - 2160-1836 .- 2160-1836. ; 8:5, s. 1391-1398
  • Tidskriftsartikel (refereegranskat)abstract
    • The domestic rock pigeon (Columba livia) is among the most widely distributed and phenotypically diverse avian species. C. livia is broadly studied in ecology, genetics, physiology, behavior, and evolutionary biology, and has recently emerged as a model for understanding the molecular basis of anatomical diversity, the magnetic sense, and other key aspects of avian biology. Here we report an update to the C. livia genome reference assembly and gene annotation dataset. Greatly increased scaffold lengths in the updated reference assembly, along with an updated annotation set, provide improved tools for evolutionary and functional genetic studies of the pigeon, and for comparative avian genomics in general.
  • Rosser, Neil, et al. (författare)
  • Geographic contrasts between pre- and postzygotic barriers are consistent with reinforcement in Heliconius butterflies
  • 2019
  • Ingår i: Evolution. - 0014-3820 .- 1558-5646. ; 73:9, s. 1821-1838
  • Tidskriftsartikel (refereegranskat)abstract
    • Identifying the traits causing reproductive isolation and the order in which they evolve is fundamental to understanding speciation. Here, we quantify prezygotic and intrinsic postzygotic isolation among allopatric, parapatric, and sympatric populations of the butterflies Heliconius elevatus and Heliconius pardalinus. Sympatric populations from the Amazon (H. elevatus and H. p. butleri) exhibit strong prezygotic isolation and rarely mate in captivity; however, hybrids are fertile. Allopatric populations from the Amazon (H. p. butleri) and Andes (H. p. sergestus) mate freely when brought together in captivity, but the female F1 hybrids are sterile. Parapatric populations (H. elevatus and H. p. sergestus) exhibit both assortative mating and sterility of female F1s. Assortative mating in sympatric populations is consistent with reinforcement in the face of gene flow, where the driving force, selection against hybrids, is due to disruption of mimicry and other ecological traits rather than hybrid sterility. In contrast, the lack of assortative mating and hybrid sterility observed in allopatric populations suggests that geographic isolation enables the evolution of intrinsic postzygotic reproductive isolation. Our results show how the types of reproductive barriers that evolve between species may depend on geography.
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