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Träfflista för sökning "WFRF:(Vieira Jose P.) ;pers:(Willerslev Eske)"

Sökning: WFRF:(Vieira Jose P.) > Willerslev Eske

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1.
  • da Fonseca, Rute R., et al. (författare)
  • The origin and evolution of maize in the Southwestern United States
  • 2015
  • Ingår i: Nature Plants. - 2055-026X. ; 1:1
  • Tidskriftsartikel (refereegranskat)abstract
    • The origin of maize (Zea mays mays) in the US Southwest remains contentious, with conflicting archaeological data supporting either coastal(1-4) or highland(5,6) routes of diffusion of maize into the United States. Furthermore, the genetics of adaptation to the new environmental and cultural context of the Southwest is largely uncharacterized(7). To address these issues, we compared nuclear DNA from 32 archaeological maize samples spanning 6,000 years of evolution to modern landraces. We found that the initial diffusion of maize into the Southwest about 4,000 years ago is likely to have occurred along a highland route, followed by gene flow from a lowland coastal maize beginning at least 2,000 years ago. Our population genetic analysis also enabled us to differentiate selection during domestication for adaptation to the climatic and cultural environment of the Southwest, identifying adaptation loci relevant to drought tolerance and sugar content.
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2.
  • Sinding, Mikkel-Holger S., et al. (författare)
  • Arctic-adapted dogs emerged at the Pleistocene-Holocene transition
  • 2020
  • Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 368:6498
  • Tidskriftsartikel (refereegranskat)abstract
    • Although sled dogs are one of the most specialized groups of dogs, their origin and evolution has received much less attention than many other dog groups. We applied a genomic approach to investigate their spatiotemporal emergence by sequencing the genomes of 10 modern Greenland sled dogs, an similar to 9500-year-old Siberian dog associated with archaeological evidence for sled technology, and an similar to 33,000-year-old Siberian wolf. We found noteworthy genetic similarity between the ancient dog and modern sled dogs. We detected gene flow from Pleistocene Siberian wolves, but not modern American wolves, to present-day sled dogs. The results indicate that the major ancestry of modern sled dogs traces back to Siberia, where sled dog-specific haplotypes of genes that potentially relate to Arctic adaptation were established by 9500 years ago.
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Willerslev, Eske (2)Ta bort avgränsningen
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