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Analysis of paternal lineages in Brazilian and African populations
The present-day Brazilian population is a consequence of the admixture of various peoples of very different origins, namely, Amerindians, Europeans and Africans. The proportion of each genetic contribution is known to be very heterogeneous throughout the country. The aim of the present study was to...
Autores principales: | , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Sociedade Brasileira de Genética
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036106/ https://www.ncbi.nlm.nih.gov/pubmed/21637407 http://dx.doi.org/10.1590/S1415-47572010005000067 |
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author | Carvalho, Mónica Brito, Pedro Lopes, Virgínia Andrade, Lisa Anjos, Mª João Real, Francisco Corte Gusmão, Leonor |
author_facet | Carvalho, Mónica Brito, Pedro Lopes, Virgínia Andrade, Lisa Anjos, Mª João Real, Francisco Corte Gusmão, Leonor |
author_sort | Carvalho, Mónica |
collection | PubMed |
description | The present-day Brazilian population is a consequence of the admixture of various peoples of very different origins, namely, Amerindians, Europeans and Africans. The proportion of each genetic contribution is known to be very heterogeneous throughout the country. The aim of the present study was to compare the male lineages present in two distinct Brazilian populations, as well as to evaluate the African contribution to their male genetic substrate. Thus, two Brazilian population samples from Manaus (State of Amazon) and Ribeirão Preto (State of São Paulo) and three African samples from Guinea Bissau, Angola and Mozambique were typed for a set of nine Y chromosome specific STRs. The data were compared with those from African, Amerindian and European populations. By using Y-STR haplotype information, low genetic distances were found between the Manaus and Ribeirão Preto populations, as well as between these and others from Iberia. Likewise, no significant distances were observed between any of the African samples from Angola, Mozambique and Guinea Bissau. Highly significant Rst values were found between both Brazilian samples and all the African and Amerindian populations. The absence of a significant Sub-Saharan African male component resulting from the slave trade, and the low frequency in Amerindian ancestry Y-lineages in the Manaus and Ribeirão Preto population samples are in accordance with the accentuated gender asymmetry in admixture processes that has been systematically reported in colonial South American populations. |
format | Text |
id | pubmed-3036106 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Sociedade Brasileira de Genética |
record_format | MEDLINE/PubMed |
spelling | pubmed-30361062011-06-02 Analysis of paternal lineages in Brazilian and African populations Carvalho, Mónica Brito, Pedro Lopes, Virgínia Andrade, Lisa Anjos, Mª João Real, Francisco Corte Gusmão, Leonor Genet Mol Biol Human and Medical Genetics The present-day Brazilian population is a consequence of the admixture of various peoples of very different origins, namely, Amerindians, Europeans and Africans. The proportion of each genetic contribution is known to be very heterogeneous throughout the country. The aim of the present study was to compare the male lineages present in two distinct Brazilian populations, as well as to evaluate the African contribution to their male genetic substrate. Thus, two Brazilian population samples from Manaus (State of Amazon) and Ribeirão Preto (State of São Paulo) and three African samples from Guinea Bissau, Angola and Mozambique were typed for a set of nine Y chromosome specific STRs. The data were compared with those from African, Amerindian and European populations. By using Y-STR haplotype information, low genetic distances were found between the Manaus and Ribeirão Preto populations, as well as between these and others from Iberia. Likewise, no significant distances were observed between any of the African samples from Angola, Mozambique and Guinea Bissau. Highly significant Rst values were found between both Brazilian samples and all the African and Amerindian populations. The absence of a significant Sub-Saharan African male component resulting from the slave trade, and the low frequency in Amerindian ancestry Y-lineages in the Manaus and Ribeirão Preto population samples are in accordance with the accentuated gender asymmetry in admixture processes that has been systematically reported in colonial South American populations. Sociedade Brasileira de Genética 2010 2010-09-01 /pmc/articles/PMC3036106/ /pubmed/21637407 http://dx.doi.org/10.1590/S1415-47572010005000067 Text en Copyright © 2010, Sociedade Brasileira de Genética. http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Human and Medical Genetics Carvalho, Mónica Brito, Pedro Lopes, Virgínia Andrade, Lisa Anjos, Mª João Real, Francisco Corte Gusmão, Leonor Analysis of paternal lineages in Brazilian and African populations |
title | Analysis of paternal lineages in Brazilian and African populations |
title_full | Analysis of paternal lineages in Brazilian and African populations |
title_fullStr | Analysis of paternal lineages in Brazilian and African populations |
title_full_unstemmed | Analysis of paternal lineages in Brazilian and African populations |
title_short | Analysis of paternal lineages in Brazilian and African populations |
title_sort | analysis of paternal lineages in brazilian and african populations |
topic | Human and Medical Genetics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036106/ https://www.ncbi.nlm.nih.gov/pubmed/21637407 http://dx.doi.org/10.1590/S1415-47572010005000067 |
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