The genomic landscape underlying phenotypic integrity in the face of gene flow in crows

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2014
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Poelstra, Jelmer
Vijay, Nagarjun
Bossu, Christen
Lantz, Henrik
Ryll, Bettina
Müller, Inge
Baglione, Vittorio
Unneberg, Per
Grabherr, Manfred
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Science. 2014, 344(6190), pp. 1410-1414. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1253226
Zusammenfassung

The importance, extent, and mode of interspecific gene flow for the evolution of species has long been debated. Characterization of genomic differentiation in a classic example of hybridization between all-black carrion crows and gray-coated hooded crows identified genome-wide introgression extending far beyond the morphological hybrid zone. Gene expression divergence was concentrated in pigmentation genes expressed in gray versus black feather follicles. Only a small number of narrow genomic islands exhibited resistance to gene flow. One prominent genomic region (<2 megabases) harbored 81 of all 82 fixed differences (of 8.4 million single-nucleotide polymorphisms in total) linking genes involved in pigmentation and in visual perception-a genomic signal reflecting color-mediated prezygotic isolation. Thus, localized genomic selection can cause marked heterogeneity in introgression landscapes while maintaining phenotypic divergence.

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570 Biowissenschaften, Biologie
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ISO 690POELSTRA, Jelmer, Nagarjun VIJAY, Christen BOSSU, Henrik LANTZ, Bettina RYLL, Inge MÜLLER, Vittorio BAGLIONE, Per UNNEBERG, Martin WIKELSKI, Manfred GRABHERR, Jochen WOLF, 2014. The genomic landscape underlying phenotypic integrity in the face of gene flow in crows. In: Science. 2014, 344(6190), pp. 1410-1414. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1253226
BibTex
@article{Poelstra2014genom-29667,
  year={2014},
  doi={10.1126/science.1253226},
  title={The genomic landscape underlying phenotypic integrity in the face of gene flow in crows},
  number={6190},
  volume={344},
  issn={0036-8075},
  journal={Science},
  pages={1410--1414},
  author={Poelstra, Jelmer and Vijay, Nagarjun and Bossu, Christen and Lantz, Henrik and Ryll, Bettina and Müller, Inge and Baglione, Vittorio and Unneberg, Per and Wikelski, Martin and Grabherr, Manfred and Wolf, Jochen}
}
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