Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.

<h4>Background</h4>Estimating the historical and demographic parameters that characterize modern human populations is a fundamental part of reconstructing the recent history of our species. In addition, the development of a model of human evolution that can best explain neutral genetic d...

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Autores principales:	Guillaume Laval, Etienne Patin, Luis B Barreiro, Lluís Quintana-Murci
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/57db441b1515459da89ec89a2ec8a64e
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spelling	oai:doaj.org-article:57db441b1515459da89ec89a2ec8a64e2021-11-25T06:24:22ZFormulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.1932-620310.1371/journal.pone.0010284https://doaj.org/article/57db441b1515459da89ec89a2ec8a64e2010-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20421973/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Estimating the historical and demographic parameters that characterize modern human populations is a fundamental part of reconstructing the recent history of our species. In addition, the development of a model of human evolution that can best explain neutral genetic diversity is required to identify confidently regions of the human genome that have been targeted by natural selection.<h4>Methodology/principal findings</h4>We have resequenced 20 independent noncoding autosomal regions dispersed throughout the genome in 213 individuals from different continental populations, corresponding to a total of approximately 6 Mb of diploid resequencing data. We used these data to explore and co-estimate an extensive range of historical and demographic parameters with a statistical framework that combines the evaluation of multiple models of human evolution via a best-fit approach, followed by an Approximate Bayesian Computation (ABC) analysis. From a methodological standpoint, evaluating the accuracy of the parameter co-estimation allowed us to identify the most accurate set of statistics to be used for the estimation of each of the different historical and demographic parameters characterizing recent human evolution.<h4>Conclusions/significance</h4>Our results support a model in which modern humans left Africa through a single major dispersal event occurring approximately 60,000 years ago, corresponding to a drastic reduction of approximately 5 times the effective population size of the ancestral African population of approximately 13,800 individuals. Subsequently, the ancestors of modern Europeans and East Asians diverged much later, approximately 22,500 years ago, from the population of ancestral migrants. This late diversification of Eurasians after the African exodus points to the occurrence of a long maturation phase in which the ancestral Eurasian population was not yet diversified.Guillaume LavalEtienne PatinLuis B BarreiroLluís Quintana-MurciPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 4, p e10284 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Guillaume Laval Etienne Patin Luis B Barreiro Lluís Quintana-Murci Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
description	<h4>Background</h4>Estimating the historical and demographic parameters that characterize modern human populations is a fundamental part of reconstructing the recent history of our species. In addition, the development of a model of human evolution that can best explain neutral genetic diversity is required to identify confidently regions of the human genome that have been targeted by natural selection.<h4>Methodology/principal findings</h4>We have resequenced 20 independent noncoding autosomal regions dispersed throughout the genome in 213 individuals from different continental populations, corresponding to a total of approximately 6 Mb of diploid resequencing data. We used these data to explore and co-estimate an extensive range of historical and demographic parameters with a statistical framework that combines the evaluation of multiple models of human evolution via a best-fit approach, followed by an Approximate Bayesian Computation (ABC) analysis. From a methodological standpoint, evaluating the accuracy of the parameter co-estimation allowed us to identify the most accurate set of statistics to be used for the estimation of each of the different historical and demographic parameters characterizing recent human evolution.<h4>Conclusions/significance</h4>Our results support a model in which modern humans left Africa through a single major dispersal event occurring approximately 60,000 years ago, corresponding to a drastic reduction of approximately 5 times the effective population size of the ancestral African population of approximately 13,800 individuals. Subsequently, the ancestors of modern Europeans and East Asians diverged much later, approximately 22,500 years ago, from the population of ancestral migrants. This late diversification of Eurasians after the African exodus points to the occurrence of a long maturation phase in which the ancestral Eurasian population was not yet diversified.
format	article
author	Guillaume Laval Etienne Patin Luis B Barreiro Lluís Quintana-Murci
author_facet	Guillaume Laval Etienne Patin Luis B Barreiro Lluís Quintana-Murci
author_sort	Guillaume Laval
title	Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
title_short	Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
title_full	Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
title_fullStr	Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
title_full_unstemmed	Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
title_sort	formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/57db441b1515459da89ec89a2ec8a64e
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Formulating a historical and demographic model of recent human evolution based on resequencing data from noncoding regions.

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