Admixture, Population Structure, and F-Statistics
نویسندگان
چکیده
منابع مشابه
Admixture, Population Structure, and F-Statistics.
Many questions about human genetic history can be addressed by examining the patterns of shared genetic variation between sets of populations. A useful methodological framework for this purpose isF-statistics that measure shared genetic drift between sets of two, three, and four populations and can be used to test simple and complex hypotheses about admixture between populations. This article p...
متن کاملDistinguishing Recent Admixture from Ancestral Population Structure
Wedevelopandtest twomethods fordistinguishingbetweenrecentadmixtureandancestralpopulationstructureasexplanations for greater similarity of one of two populations to an outgroup population. This problem arose when Neanderthals were found to be slightly more similar to nonAfrican than to African populations. The excess similarity is consistent with both recent admixture from Neanderthals into the...
متن کاملEstimating population-level coancestry coefficients by an admixture F model.
In this article, we develop an admixture F model (AFM) for the estimation of population-level coancestry coefficients from neutral molecular markers. In contrast to the previously published F model, the AFM enables disentangling small population size and lack of migration as causes of genetic differentiation behind a given level of F(ST). We develop a Bayesian estimation scheme for fitting the ...
متن کاملA Spatial Framework for Understanding Population Structure and Admixture
Geographic patterns of genetic variation within modern populations, produced by complex histories of migration, can be difficult to infer and visually summarize. A general consequence of geographically limited dispersal is that samples from nearby locations tend to be more closely related than samples from distant locations, and so genetic covariance often recapitulates geographic proximity. We...
متن کاملF statistics in Drosophila buzzatii: selection, population size and inbreeding.
Drosophila buzzatii is confined to reproducing in a well defined patchy environment consisting of rotting cactus cladodes which are ephemeral, permitting at most three generations. Flies emerging from such rots were used to estimate the additive genetic variance within rots and the genetic variance between rots for body size and also were electrophoresed to determine their genotypes at six poly...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Genetics
سال: 2016
ISSN: 1943-2631
DOI: 10.1534/genetics.115.183913