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The Hidden Side of Invasions: Massive Introgression by Local Genes
- M. Currat, M. Ruedi, R. Petit, L. Excoffier
- Environmental ScienceEvolution; international journal of organic…
- 1 August 2008
It is shown by spatially explicit simulations that massive introgression of neutral genes takes place during the invasion of an occupied territory if interbreeding is not severely prevented between the invading and the local species.
Intra-deme molecular diversity in spatially expanding populations.
A simulation study examining the effect of a recent spatial expansion on the pattern of molecular diversity within a deme finds that the shape of the gene genealogies and the overall pattern of diversity within demes depend not only on the age of the expansion but also on the level of gene flow between neighboring demes, as measured by the product Nm.
The fate of mutations surfing on the wave of a range expansion.
It is found that the probability of survival of a new mutation depends to a large degree on its proximity to the edge of the wave, and a consequence of the surfing phenomenon is to increase the rate of evolution of spatially expanding populations.
Upper Palaeolithic genomes reveal deep roots of modern Eurasians
- E. Jones, G. González-Fortes, D. Bradley
- Geography, Environmental ScienceNature Communications
- 16 November 2015
It is found that Caucasus hunter-gatherers (CHG) belong to a distinct ancient clade that split from western hunter- Gatherers ∼45 kya, shortly after the expansion of anatomically modern humans into Europe and from the ancestors of Neolithic farmers ∼25 KYa, around the Last Glacial Maximum.
Modern Humans Did Not Admix with Neanderthals during Their Range Expansion into Europe
A realistic model of the range expansion of early modern humans into Europe, and of their competition and potential admixture with local Neanderthals, shows that the absence of Neanderthal mtDNA sequences in Europe is compatible with at most 120 admixture events between the two populations despite a likely cohabitation time of more than 12,000 y.
SPLATCHE2: a spatially explicit simulation framework for complex demography, genetic admixture and recombination
SUMMARY SPLATCHE2 is a program to simulate the demography of populations and the resulting molecular diversity for a wide range of evolutionary scenarios. The spatially explicit simulation framework…
The effect of the Neolithic expansion on European molecular diversity
- M. Currat, L. Excoffier
- Environmental ScienceProceedings of the Royal Society B: Biological…
- 7 April 2005
It is concluded that the different patterns of molecular diversity observed for Y chromosome and mitochondrial DNA can be at least partly owing to an ascertainment bias when selecting Y chromosome SNPs for studying European populations.
Evolution of lactase persistence: an example of human niche construction
- P. Gerbault, A. Liebert, Mark George Thomas
- BiologyPhilosophical Transactions of the Royal Society B…
- 27 March 2011
How genetic and archaeological information can be integrated to bring new insights to the origins and spread of lactase persistence is illustrated by three simulation studies that have shed light on the evolution of this trait in Europe.
The genetic history of Europeans.
Consequences of range contractions and range shifts on molecular diversity.
The results suggest that the levels of diversity preserved after a climate change both within and between refuge areas will not only depend on the dispersal abilities of a species but also on the speed of the change, which implies that a given episode of climatic change will impact differently species with different generation times.