Results 31 to 40 of about 85,764 (284)

The Kalash Genetic Isolate? The Evidence for Recent Admixture [PDF]

open access: yesThe American Journal of Human Genetics, 2016
To the editor: The recent paper “The Kalash Genetic Isolate: Ancient Divergence, Drift, and Selection,” by Ayub et al.1 suggests that the Kalash people of present-day Pakistan experienced “no detectable gene flow from their geographic neighbors in Pakistan or from other extant Eurasian populations” since their split from those populations over 8,000 ...
Hellenthal G   +7 more
openaire   +5 more sources

High genetic diversity despite the potential for stepping-stone colonizations in an invasive species of gecko on Moorea, French Polynesia. [PDF]

open access: yesPLoS ONE, 2011
Invasive species often have reduced genetic diversity, but the opposite can be true if there have been multiple introductions and genetic admixture.
Maria A Tonione   +2 more
doaj   +1 more source

Inference of population splits and mixtures from genome-wide allele frequency data [PDF]

open access: yes, 2012
Many aspects of the historical relationships between populations in a species are reflected in genetic data. Inferring these relationships from genetic data, however, remains a challenging task. In this paper, we present a statistical model for inferring
A Keinan   +66 more
core   +5 more sources

The geometry of admixture in population genetics: the blessing of dimensionality

open access: yesGENETICS, 2023
Abstract We present a geometry-based interpretation of the f-statistics framework, commonly used in population genetics to estimate phylogenetic relationships from genomic data. The focus is on the determination of the mixing coefficients in population admixture events subject to post-admixture drift.
José-Angel Oteo, Gonzalo Oteo-García
openaire   +3 more sources

Genome-wide SNP analysis of Southern African populations provides new insights into the dispersal of Bantu-speaking groups [PDF]

open access: yes, 2015
The expansion of Bantu-speaking agropastoralist populations had a great impact on the genetic, linguistic, and cultural variation of sub-Saharan Africa. It is generally accepted that Bantu languages originated in an area around the present border between
ANAGNOSTOU, PAOLO   +8 more
core   +3 more sources

AdmixSim: A Forward-Time Simulator for Various Complex Scenarios of Population Admixture

open access: yesFrontiers in Genetics, 2020
Background: Population admixture is a common phenomenon in humans, animals, and plants, and it plays a very important role in shaping individual genetic architecture and population genetic diversity.
Xiong Yang   +9 more
doaj   +1 more source

The date of interbreeding between Neandertals and modern humans [PDF]

open access: yes, 2012
Comparisons of DNA sequences between Neandertals and present-day humans have shown that Neandertals share more genetic variants with non-Africans than with Africans.
Li, Heng   +4 more
core   +5 more sources

The genetic architecture underlying the evolution of a rare piscivorous life history form in brown trout after secondary contact and strong introgression [PDF]

open access: yes, 2018
Identifying the genetic basis underlying phenotypic divergence and reproductive isolation is a longstanding problem in evolutionary biology. Genetic signals of adaptation and reproductive isolation are often confounded by a wide range of factors, such as
Adams, Colin E.   +4 more
core   +2 more sources

Understanding admixture patterns in supplemented populations: a case study combining molecular analyses and temporally explicit simulations in Atlantic salmon

open access: yesEvolutionary Applications, 2013
Genetic admixture between wild and introduced populations is a rising concern for the management of endangered species. Here, we use a dual approach based on molecular analyses of samples collected before and after hatchery fish introduction in ...
Charles Perrier   +2 more
doaj   +1 more source

A Novel and Fast Approach for Population Structure Inference Using Kernel-PCA and Optimization (PSIKO) [PDF]

open access: yes, 2014
Population structure is a confounding factor in Genome Wide Association Studies, increasing the rate of false positive associations. In order to correct for it, several model-based algorithms such as ADMIXTURE and STRUCTURE have been proposed. These tend
Bancroft, Ian   +4 more
core   +2 more sources

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