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https://hdl.handle.net/10216/109258
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DC Field | Value | Language |
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dc.creator | Harich, N | - |
dc.creator | Costa, MD | - |
dc.creator | Fernandes, V | - |
dc.creator | Kandil, M | - |
dc.creator | Pereira, JB | - |
dc.creator | Silva, NM | - |
dc.creator | Pereira, L | - |
dc.date.accessioned | 2017-12-18T14:31:41Z | - |
dc.date.available | 2017-12-18T14:31:41Z | - |
dc.date.issued | 2010 | - |
dc.identifier.issn | 1471-2148 | - |
dc.identifier.uri | http://hdl.handle.net/10216/109258 | - |
dc.description.abstract | BACKGROUND: A proportion of 1/4 to 1/2 of North African female pool is made of typical sub-Saharan lineages, in higher frequencies as geographic proximity to sub-Saharan Africa increases. The Sahara was a strong geographical barrier against gene flow, at least since 5,000 years ago, when desertification affected a larger region, but the Arab trans-Saharan slave trade could have facilitate enormously this migration of lineages. Till now, the genetic consequences of these forced trans-Saharan movements of people have not been ascertained. RESULTS: The distribution of the main L haplogroups in North Africa clearly reflects the known trans-Saharan slave routes: West is dominated by L1b, L2b, L2c, L2d, L3b and L3d; the Center by L3e and some L3f and L3w; the East by L0a, L3h, L3i, L3x and, in common with the Center, L3f and L3w; while, L2a is almost everywhere. Ages for the haplogroups observed in both sides of the Saharan desert testify the recent origin (holocenic) of these haplogroups in sub-Saharan Africa, claiming a recent introduction in North Africa, further strengthened by the no detection of local expansions. CONCLUSIONS: The interpolation analyses and complete sequencing of present mtDNA sub-Saharan lineages observed in North Africa support the genetic impact of recent trans-Saharan migrations, namely the slave trade initiated by the Arab conquest of North Africa in the seventh century. Sub-Saharan people did not leave traces in the North African maternal gene pool for the time of its settlement, some 40,000 years ago. | - |
dc.language.iso | eng | - |
dc.publisher | BioMed Central | - |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/66275/PT | - |
dc.relation.ispartof | BMC Evolutionary Biology, vol. 10:138 | - |
dc.rights | openAccess | - |
dc.rights.uri | https://creativecommons.org/licenses/by/2.0/ | - |
dc.subject | Africa South of the Sahara | - |
dc.subject | DNA Mitochondrial/genetics | - |
dc.subject | Desert Climate | - |
dc.subject | Female | - |
dc.subject | Genetics, Population | - |
dc.subject | Humans | - |
dc.subject | Molecular Sequence Data | - |
dc.subject | Morocco | - |
dc.subject | Social Problems | - |
dc.title | The trans-Saharan slave trade – clues from interpolation analyses and high-resolution characterization of mitochondrial DNA lineages | - |
dc.type | Artigo em Revista Científica Internacional | - |
dc.contributor.uporto | Instituto de Investigação e Inovação em Saúde | - |
dc.identifier.doi | 10.1186/1471-2148-10-138 | - |
dc.relation.publisherversion | https://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-10-138 | - |
Appears in Collections: | I3S - Artigo em Revista Científica Internacional |
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File | Description | Size | Format | |
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Harich2010BMCEvolBiol.pdf | 1.45 MB | Adobe PDF | View/Open | |
Harich2010BMCEvolBiolSupMat1.DOC | 128.5 kB | Microsoft Word | View/Open | |
Harich2010BMCEvolBiolSupMat2.XLS | 247 kB | Microsoft Excel | View/Open | |
Harich2010BMCEvolBiolSupMat3.DOC | 235.5 kB | Microsoft Word | View/Open |
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