Tag Archives: gene flow

The Kennewick, and the Oase I

Last week was glorious for ancient DNA enthusiasts – here are some quick blurbs on findings from genomic analyses of the Kennewick man, and the Oase I individual. The ancestry and affiliations of Kennewick Man, Rasmussen et al. (2015) Nature DOI: … Continue reading

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Genomic history of Eurasia

The route of modern humans out of Africa has been contentious, with archaeological and genetic finds pointing towards a route through Egypt, versus one through Ethiopia. Pagani et al. (2015) analyze the genomic admixture of individuals sampled from both Egypt … Continue reading

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Gene flow and Population Fitness

Fitness effects of gene flow (both advantageous and deleterious) have garnered plenty of recent press and scientific exploration. At the population level, the concepts and consequences are notoriously familiar. In the context of immigration, they reduce to existing genetic variation, … Continue reading

Posted in adaptation, evolution, genomics, natural history, population genetics, selection, speciation, theory | Tagged , , , , , | 1 Comment

THREAT DOWN! Gene flow from polar bears into brown bears

What do you get when you cross a male polar bear with a female brown bear? Trick question: Nothing, because it doesn’t really happen!*

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Rescue me

Whiteley et al. (2015) review genetic rescue (GR), or the increase in population fitness (growth) owing to immigration of new alleles, in a new paper in TREE. Genetic rescue is a controversial and hasn’t been applied to any great extent … Continue reading

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