The geography of recent genetic ancestry across Europe.

The recent genealogical history of human populations is a complex mosaic formed by individual migration, large-scale population movements, and other demographic events. Population genomics datasets can provide a window into this recent history, as rare traces of recent shared genetic ancestry are de...

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Autores principales:	Peter Ralph, Graham Coop
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/5a19fe9dd25a4057b02f030bd0359615
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spelling	oai:doaj.org-article:5a19fe9dd25a4057b02f030bd03596152021-11-18T05:37:07ZThe geography of recent genetic ancestry across Europe.1544-91731545-788510.1371/journal.pbio.1001555https://doaj.org/article/5a19fe9dd25a4057b02f030bd03596152013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23667324/?tool=EBIhttps://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885The recent genealogical history of human populations is a complex mosaic formed by individual migration, large-scale population movements, and other demographic events. Population genomics datasets can provide a window into this recent history, as rare traces of recent shared genetic ancestry are detectable due to long segments of shared genomic material. We make use of genomic data for 2,257 Europeans (in the Population Reference Sample [POPRES] dataset) to conduct one of the first surveys of recent genealogical ancestry over the past 3,000 years at a continental scale. We detected 1.9 million shared long genomic segments, and used the lengths of these to infer the distribution of shared ancestors across time and geography. We find that a pair of modern Europeans living in neighboring populations share around 2-12 genetic common ancestors from the last 1,500 years, and upwards of 100 genetic ancestors from the previous 1,000 years. These numbers drop off exponentially with geographic distance, but since these genetic ancestors are a tiny fraction of common genealogical ancestors, individuals from opposite ends of Europe are still expected to share millions of common genealogical ancestors over the last 1,000 years. There is also substantial regional variation in the number of shared genetic ancestors. For example, there are especially high numbers of common ancestors shared between many eastern populations that date roughly to the migration period (which includes the Slavic and Hunnic expansions into that region). Some of the lowest levels of common ancestry are seen in the Italian and Iberian peninsulas, which may indicate different effects of historical population expansions in these areas and/or more stably structured populations. Population genomic datasets have considerable power to uncover recent demographic history, and will allow a much fuller picture of the close genealogical kinship of individuals across the world.Peter RalphGraham CoopPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 11, Iss 5, p e1001555 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Peter Ralph Graham Coop The geography of recent genetic ancestry across Europe.
description	The recent genealogical history of human populations is a complex mosaic formed by individual migration, large-scale population movements, and other demographic events. Population genomics datasets can provide a window into this recent history, as rare traces of recent shared genetic ancestry are detectable due to long segments of shared genomic material. We make use of genomic data for 2,257 Europeans (in the Population Reference Sample [POPRES] dataset) to conduct one of the first surveys of recent genealogical ancestry over the past 3,000 years at a continental scale. We detected 1.9 million shared long genomic segments, and used the lengths of these to infer the distribution of shared ancestors across time and geography. We find that a pair of modern Europeans living in neighboring populations share around 2-12 genetic common ancestors from the last 1,500 years, and upwards of 100 genetic ancestors from the previous 1,000 years. These numbers drop off exponentially with geographic distance, but since these genetic ancestors are a tiny fraction of common genealogical ancestors, individuals from opposite ends of Europe are still expected to share millions of common genealogical ancestors over the last 1,000 years. There is also substantial regional variation in the number of shared genetic ancestors. For example, there are especially high numbers of common ancestors shared between many eastern populations that date roughly to the migration period (which includes the Slavic and Hunnic expansions into that region). Some of the lowest levels of common ancestry are seen in the Italian and Iberian peninsulas, which may indicate different effects of historical population expansions in these areas and/or more stably structured populations. Population genomic datasets have considerable power to uncover recent demographic history, and will allow a much fuller picture of the close genealogical kinship of individuals across the world.
format	article
author	Peter Ralph Graham Coop
author_facet	Peter Ralph Graham Coop
author_sort	Peter Ralph
title	The geography of recent genetic ancestry across Europe.
title_short	The geography of recent genetic ancestry across Europe.
title_full	The geography of recent genetic ancestry across Europe.
title_fullStr	The geography of recent genetic ancestry across Europe.
title_full_unstemmed	The geography of recent genetic ancestry across Europe.
title_sort	geography of recent genetic ancestry across europe.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/5a19fe9dd25a4057b02f030bd0359615
work_keys_str_mv	AT peterralph thegeographyofrecentgeneticancestryacrosseurope AT grahamcoop thegeographyofrecentgeneticancestryacrosseurope AT peterralph geographyofrecentgeneticancestryacrosseurope AT grahamcoop geographyofrecentgeneticancestryacrosseurope
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The geography of recent genetic ancestry across Europe.

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