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Mass of genes rathe...
Mass of genes rather than master genes underlie the genomic architecture of amphibian speciation
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- Dufresnes, Christophe (författare)
- Nanjing Forestry Univ, Coll Biol & Environm, LASER, Nanjing 210037, Peoples R China; Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
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- Brelsford, Alan (författare)
- Univ Calif Riverside, Dept Evolut Ecol & Organismal Biol, Riverside, CA 92521 USA
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- Jeffries, Daniel L. (författare)
- Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
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- Mazepa, Glib (författare)
- Uppsala universitet,Evolutionsbiologi,Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
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- Suchan, Tomasz (författare)
- Polish Acad Sci, W Szafer Inst Bot, PL-31512 Krakow, Poland
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- Canestrelli, Daniele (författare)
- Tuscia Univ, Dept Ecol & Biol Sci, I-01100 Viterbo, Italy
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- Nicieza, Alfredo (författare)
- Univ Oviedo Principal Asturias, Biodivers Res Inst, CSIC, Mieres 33600, Spain; Univ Oviedo, Dept Organisms & Syst Biol, Oviedo 33003, Spain
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- Fumagalli, Luca (författare)
- Univ Lausanne, Dept Ecol & Evolut, Lab Conservat Biol, CH-1015 Lausanne, Switzerland; Lausanne Univ Hosp, Univ Ctr Legal Med Lausanne Geneva, CH-1000 Lausanne 25, Switzerland; Univ Lausanne, CH-1000 Lausanne 25, Switzerland
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- Dubey, Sylvain (författare)
- Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
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- Martínez-Solano, Iñigo (författare)
- Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolut, Madrid 28006, Spain
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- Litvinchuk, Spartak N. (författare)
- Russian Acad Sci, Inst Cytol, St Petersburg 119991, Russia; Dagestan State Univ, Dept Biol, Makhachkala 367008, Russia
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- Vences, Miguel (författare)
- Tech Univ Carolo Wilhelmina Braunschweig, Zool Inst, D-38106 Braunschweig, Germany
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- Perrin, Nicolas (författare)
- Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
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- Crochet, Pierre-André (författare)
- Univ Montpellier, EPHE, CNRS, CEFE,IRD, F-34090 Montpellier, France
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(creator_code:org_t)
- 2021-08-31
- 2021
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences (PNAS). - 0027-8424 .- 1091-6490. ; 118:36
- Relaterad länk:
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https://www.ncbi.nlm...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The genetic architecture of speciation, i.e., how intrinsic genomic incompatibilities promote reproductive isolation (RI) between diverging lineages, is one of the best-kept secrets of evolution. To directly assess whether incompatibilities arise in a limited set of large-effect speciation genes, or in a multitude of loci, we examined the geographic and genomic landscapes of introgression across the hybrid zones of 41 pairs of frog and toad lineages in the Western Palearctic region. As the divergence between lineages increases, phylogeographic transitions progressively become narrower, and larger parts of the genome resist introgression. This suggests that anuran speciation proceeds through a gradual accumulation of multiple barrier loci scattered across the genome, which ultimately deplete hybrid fitness by intrinsic postzygotic isolation, with behavioral isolation being achieved only at later stages. Moreover, these loci were disproportionately sex linked in one group (Hyla) but not in others (Rana and Bufotes), implying that large X-effects are not necessarily a rule of speciation with undifferentiated sex chromosomes. The highly polygenic nature of RI and the lack of hemizygous X/Z chromosomes could explain why the speciation clock ticks slower in amphibians compared to other vertebrates. The clock-like dynamics of speciation combined with the analytical focus on hybrid zones offer perspectives for more standardized practices of species delimitation.
Ämnesord
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- cryptic species
- Haldane's rule
- phylogeography
- sex chromosomes
- species delimitation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Dufresnes, Chris ...
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Brelsford, Alan
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Jeffries, Daniel ...
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Mazepa, Glib
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Suchan, Tomasz
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Canestrelli, Dan ...
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visa fler...
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Nicieza, Alfredo
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Fumagalli, Luca
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Dubey, Sylvain
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Martínez-Solano, ...
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Litvinchuk, Spar ...
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Vences, Miguel
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Perrin, Nicolas
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Crochet, Pierre- ...
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NATURVETENSKAP
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Uppsala universitet