Evolution du climat et des civilisations depuis 40 000 ans du nord au sud du Sahara Occidental (premières conceptions confrontées aux données rerentes)

Alimen, Henriette

doi:10.3406/quate.1987.1851

Cited by 16 publications

(7 citation statements)

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“…Human settlement in the northwestern coast of Africa is the result of a continuous complex network of migrations, invasions and admixture of people from different origins that began around 40,000 years before present (YBP) (7). Before the Sahara desertification took place (around 9000 YBP), several Neolithic cultures flourished in the area, bringing together people of sub‐Saharan and North African origin (8).…”

Section: Ambiguous Hla‐a Alleles and Their Respective Assignment Labementioning

confidence: 99%

HLA‐A polymorphisms in four ethnic groups from Guinea‐Bissau (West Africa) inferred from sequence‐based typing

Spínola¹,

Bruges-Armas²,

Brehm³

et al. 2008

Tissue Antigens

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Human leukocyte antigen (HLA)-A locus polymorphisms were examined at high-resolution level, using sequence-based typing, in the four most representative Guinea-Bissau (Northwest Africa) ethnic groups: Balanta, Bijagós, Fula and Papel. Despite the Fula group having significant differences when compared with the other three ethnic groups, all four groups most likely received a genetic input from non sub-Saharans. The Bijagós and Papel groups showed similarities to neighboring populations from Mali and Senegal. The Balanta, despite their oral tradition of an East Africa origin, show affinities to Cameroon populations, highly influenced by Bantu migrations. These results are congruent with historical sources and other genetic studies that support the finding that the Guinea-Bissau genetic pool was influenced by several migrations from North Africa, Sahara and East Africa.

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Section: Ambiguous Hla‐a Alleles and Their Respective Assignment Labementioning

confidence: 99%

HLA‐A polymorphisms in four ethnic groups from Guinea‐Bissau (West Africa) inferred from sequence‐based typing

Spínola¹,

Bruges-Armas²,

Brehm³

et al. 2008

Tissue Antigens

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show abstract

“…Although anthropological evidence is scarce, the earliest traces of West Atlantic occupation by modern humans dates back 40 ky [8,9]. Later climatic changes, when around 9 kya the Sahara was at its wettest [10], created conditions for both the massive displacement of people and the spread of agriculture, reaching previously uninhabited areas and promoting admixture with isolated populations [11-14].…”

Section: Introductionmentioning

confidence: 99%

Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

et al. 2007

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Background: The geographic and ethnolinguistic differentiation of many African Y-chromosomal lineages provides an opportunity to evaluate human migration episodes and admixture processes, in a pancontinental context. The analysis of the paternal genetic structure of Equatorial West Africans carried out to date leaves their origins and relationships unclear, and raises questions about the existence of major demographic phenomena analogous to the large-scale Bantu expansions. To address this, we have analysed the variation of 31 binary and 11 microsatellite markers on the non-recombining portion of the Y chromosome in Guinea-Bissau samples of diverse ethnic affiliations, some not studied before.

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“…It is the result of a continuous complex network of migrations, invasions and admixture of peoples from different origins. Fossil evidence suggests a modern human presence in NW Africa around 40000 years before present (YBP) (Alimen, 1987). A pre‐Neolithic Capsian culture evolved later locally or through a diffusion from the Near East (Camps‐Faber, 1989).…”

Section: Introductionmentioning

confidence: 99%

MtDNA Profile of West Africa Guineans: Towards a Better Understanding of the Senegambia Region

Rosa

Brehm

Kivisild

et al. 2004

Annals of Human Genetics

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SummaryThe matrilineal genetic composition of 372 samples from the Republic of Guiné-Bissau (West African coast) was studied using RFLPs and partial sequencing of the mtDNA control and coding region. The majority of the mtDNA lineages of Guineans (94%) belong to West African specific sub-clusters of L0-L3 haplogroups. A new L3 sub-cluster (L3h) that is found in both eastern and western Africa is present at moderately low frequencies in Guinean populations. A non-random distribution of haplogroups U5 in the Fula group, the U6 among the "Brame" linguistic family and M1 in the Balanta-Djola group, suggests a correlation between the genetic and linguistic affiliation of Guinean populations. The presence of M1 in Balanta populations supports the earlier suggestion of their Sudanese origin. Haplogroups U5 and U6, on the other hand, were found to be restricted to populations that are thought to represent the descendants of a southern expansion of Berbers. Particular haplotypes, found almost exclusively in East-African populations, were found in some ethnic groups with an oral tradition claiming Sudanese origin.

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Evolution du climat et des civilisations depuis 40 000 ans du nord au sud du Sahara Occidental (premières conceptions confrontées aux données rerentes)

Cited by 16 publications

References 0 publications

HLA‐A polymorphisms in four ethnic groups from Guinea‐Bissau (West Africa) inferred from sequence‐based typing

HLA‐A polymorphisms in four ethnic groups from Guinea‐Bissau (West Africa) inferred from sequence‐based typing

Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

MtDNA Profile of West Africa Guineans: Towards a Better Understanding of the Senegambia Region

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