Demographic insights of human north African populations using genetic data
The history of North Africa is extremely complex, and it has been difficult to assess from genetic and archeological data whether early populations were replaced by later migrations or if there has been continuous settlement of the region. To resolve the history of human origin and migrations in Nor...
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ndltd-TDX_UPF-oai-www.tdx.cat-10803-1083362013-07-11T03:42:47ZDemographic insights of human north African populations using genetic dataRodríguez Botigué, Laura, 1984-North AfricaPopulation geneticsGene flowAdmixtureDemography575The history of North Africa is extremely complex, and it has been difficult to assess from genetic and archeological data whether early populations were replaced by later migrations or if there has been continuous settlement of the region. To resolve the history of human origin and migrations in North Africa, I have used two main forms of genetic data, the maternally inherited mtDNA and 730,000 genome-wide SNPs from a genotype array in a sample set representative of the region. I have discovered that North Africa is a mosaic of an autochthonous component dating back to the Paleolithic and at least four other ancestries, two recent ancestries from sub-Saharan Africa and the others from Europe and the Near East. We have also discovered extensive North African gene flow to the Iberian Peninsula, and minor proportions in the rest of the Europe.La història del Nord d’Àfrica és extremadament complexa, i fins ara ha estat molt difícil determinar a partir de la genètica o l’arqueologia si els primers pobladors van ser reempleçats per migracions posteriors, o si el poblament de la regió ha estat continuat al llarg del temps. Per tal d’investigar els orígens i les migracions de l’home al Nord d’Àfrica he fet servir dos marcadors genètics en un grup de poblacions representatives de la regio, el marcador heretat per via materna, el DNA mitocondrial (mtDNA), i 730,000 SNPs de tot el genoma genotipats amb un xip. He descobert que el Nord d’Àfrica és un mosaic format per un component autòcton amb origens en el Paleolític i un mínim de quatre components més, dos d’ells recents d’origen sub-Saharià i els altres Europeu i d’Orient Proper. També hem descobert un flux genic recent d’origen Nord Africà molt elevat a la Península Ibèrica, i en menor quantitat a Europa.Universitat Pompeu FabraComas, David, 1969-Universitat Pompeu Fabra. Departament de Ciències Experimentals i de la Salut2012-11-16info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersion153 p.application/pdfhttp://hdl.handle.net/10803/108336TDX (Tesis Doctorals en Xarxa)enginfo:eu-repo/semantics/openAccessL'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-sa/3.0/es/ |
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English |
format |
Doctoral Thesis |
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North Africa Population genetics Gene flow Admixture Demography 575 |
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North Africa Population genetics Gene flow Admixture Demography 575 Rodríguez Botigué, Laura, 1984- Demographic insights of human north African populations using genetic data |
description |
The history of North Africa is extremely complex, and it has been difficult to assess from
genetic and archeological data whether early populations were replaced by later
migrations or if there has been continuous settlement of the region. To resolve the history
of human origin and migrations in North Africa, I have used two main forms of genetic
data, the maternally inherited mtDNA and 730,000 genome-wide SNPs from a genotype
array in a sample set representative of the region. I have discovered that North Africa is a
mosaic of an autochthonous component dating back to the Paleolithic and at least four
other ancestries, two recent ancestries from sub-Saharan Africa and the others from
Europe and the Near East. We have also discovered extensive North African gene flow to
the Iberian Peninsula, and minor proportions in the rest of the Europe. === La història del Nord d’Àfrica és extremadament complexa, i fins ara ha estat molt difícil
determinar a partir de la genètica o l’arqueologia si els primers pobladors van ser
reempleçats per migracions posteriors, o si el poblament de la regió ha estat continuat al
llarg del temps. Per tal d’investigar els orígens i les migracions de l’home al Nord
d’Àfrica he fet servir dos marcadors genètics en un grup de poblacions representatives de
la regio, el marcador heretat per via materna, el DNA mitocondrial (mtDNA), i 730,000
SNPs de tot el genoma genotipats amb un xip. He descobert que el Nord d’Àfrica és un
mosaic format per un component autòcton amb origens en el Paleolític i un mínim de
quatre components més, dos d’ells recents d’origen sub-Saharià i els altres Europeu i
d’Orient Proper. També hem descobert un flux genic recent d’origen Nord Africà molt
elevat a la Península Ibèrica, i en menor quantitat a Europa. |
author2 |
Comas, David, 1969- |
author_facet |
Comas, David, 1969- Rodríguez Botigué, Laura, 1984- |
author |
Rodríguez Botigué, Laura, 1984- |
author_sort |
Rodríguez Botigué, Laura, 1984- |
title |
Demographic insights of human north African populations using genetic data |
title_short |
Demographic insights of human north African populations using genetic data |
title_full |
Demographic insights of human north African populations using genetic data |
title_fullStr |
Demographic insights of human north African populations using genetic data |
title_full_unstemmed |
Demographic insights of human north African populations using genetic data |
title_sort |
demographic insights of human north african populations using genetic data |
publisher |
Universitat Pompeu Fabra |
publishDate |
2012 |
url |
http://hdl.handle.net/10803/108336 |
work_keys_str_mv |
AT rodriguezbotiguelaura1984 demographicinsightsofhumannorthafricanpopulationsusinggeneticdata |
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1716592717173096448 |