Publication Date:
2014-06-21
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poelstra, J W -- Vijay, N -- Bossu, C M -- Lantz, H -- Ryll, B -- Muller, I -- Baglione, V -- Unneberg, P -- Wikelski, M -- Grabherr, M G -- Wolf, J B W -- New York, N.Y. -- Science. 2014 Jun 20;344(6190):1410-4. doi: 10.1126/science.1253226.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Science for Life Laboratory and Department of Evolutionary Biology, Evolutionary Biology Centre, Uppsala University, 75236 Uppsala, Sweden. ; Bioinformatics Infrastructure for Life Sciences, Uppsala University, 75124 Uppsala, Sweden. Science for Life Laboratory and Department of Medical Biochemistry and Microbiology, Uppsala University, 75123 Uppsala, Sweden. ; Department of Organismal Biology, Evolutionary Biology Centre, Uppsala University, 75236 Uppsala, Sweden. ; Max Planck Institute for Ornithology, 78315 Radolfzell, Germany. Department of Biology, University of Konstanz, 78464 Konstanz, Germany. ; Departamento de Ciencias Agro-Forestales, Campus La Yutera, Universidad de Valladolid, 34004 Palencia, Spain. ; Science for Life Laboratory and Department of Biochemistry and Biophysics, Stockholm University, 171 21 Solna, Sweden. ; Science for Life Laboratory and Department of Medical Biochemistry and Microbiology, Uppsala University, 75123 Uppsala, Sweden. ; Science for Life Laboratory and Department of Evolutionary Biology, Evolutionary Biology Centre, Uppsala University, 75236 Uppsala, Sweden. jochen.wolf@ebc.uu.se.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24948738" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Crows/*genetics
;
Evolution, Molecular
;
Feathers/*cytology/enzymology
;
*Gene Flow
;
*Genetic Variation
;
Genomics
;
Hybridization, Genetic
;
Melanocytes/*enzymology
;
Phenotype
;
Pigmentation/*genetics
;
Polymorphism, Single Nucleotide
;
Selection, Genetic
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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