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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F13%3A10134150%21RIV14-MSM-11310___
rdf:type
n12:Vysledek skos:Concept
dcterms:description
The African Sahel is conducive to studies of divergence/admixture genetic events as a result of its population history being so closely related with past climatic changes. Today, it is a place of the co-existence of two differing food-producing subsistence systems, i.e., that of sedentary farmers and nomadic pastoralists, whose populations have likely been formed from several dispersed indigenous hunter-gatherer groups. Using new methodology, we show here that the male gene pool of the extant populations of the African Sahel harbors signatures of multiple and differentiated contributions from different genetic sources. We also show that even if the Fulani pastoralists and their neighboring farmers share high frequencies of four Y chromosome subhaplogroups of E, they have drawn on molecularly differentiated subgroups at different times. These findings, based on combinations of SNP and STR polymorphisms, add to our previous knowledge and highlight the role of differences in the demographic history and displacements of the Sahelian populations as a major factor in the segregation of the Y chromosome lineages in Africa. Interestingly, within the Fulani pastoralist population as a whole, a differentiation of the groups from Niger is characterized by their high presence of R1b-M343 and E1b1b1-M35. Moreover, the R1b-M343 is represented in our dataset exclusively in the Fulani group and our analyses infer a north-to-south African migration route during a recent past. The African Sahel is conducive to studies of divergence/admixture genetic events as a result of its population history being so closely related with past climatic changes. Today, it is a place of the co-existence of two differing food-producing subsistence systems, i.e., that of sedentary farmers and nomadic pastoralists, whose populations have likely been formed from several dispersed indigenous hunter-gatherer groups. Using new methodology, we show here that the male gene pool of the extant populations of the African Sahel harbors signatures of multiple and differentiated contributions from different genetic sources. We also show that even if the Fulani pastoralists and their neighboring farmers share high frequencies of four Y chromosome subhaplogroups of E, they have drawn on molecularly differentiated subgroups at different times. These findings, based on combinations of SNP and STR polymorphisms, add to our previous knowledge and highlight the role of differences in the demographic history and displacements of the Sahelian populations as a major factor in the segregation of the Y chromosome lineages in Africa. Interestingly, within the Fulani pastoralist population as a whole, a differentiation of the groups from Niger is characterized by their high presence of R1b-M343 and E1b1b1-M35. Moreover, the R1b-M343 is represented in our dataset exclusively in the Fulani group and our analyses infer a north-to-south African migration route during a recent past.
dcterms:title
Multiple and Differentiated Contributions to the Male Gene Pool of Pastoral and Farmer Populations of the African Sahel Multiple and Differentiated Contributions to the Male Gene Pool of Pastoral and Farmer Populations of the African Sahel
skos:prefLabel
Multiple and Differentiated Contributions to the Male Gene Pool of Pastoral and Farmer Populations of the African Sahel Multiple and Differentiated Contributions to the Male Gene Pool of Pastoral and Farmer Populations of the African Sahel
skos:notation
RIV/00216208:11310/13:10134150!RIV14-MSM-11310___
n12:predkladatel
n19:orjk%3A11310
n3:aktivita
n11:I n11:S n11:P
n3:aktivity
I, P(GA13-37998S), S
n3:cisloPeriodika
1
n3:dodaniDat
n6:2014
n3:domaciTvurceVysledku
n16:2831961
n3:druhVysledku
n17:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
90132
n3:idVysledku
RIV/00216208:11310/13:10134150
n3:jazykVysledku
n18:eng
n3:klicovaSlova
nomadic pastoralists; sedentary farmers; patrilocality; Y chromosome
n3:klicoveSlovo
n9:sedentary%20farmers n9:patrilocality n9:Y%20chromosome n9:nomadic%20pastoralists
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[9443DBD5DB78]
n3:nazevZdroje
American Journal of Physical Anthropology
n3:obor
n4:AC
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n15:GA13-37998S
n3:rokUplatneniVysledku
n6:2013
n3:svazekPeriodika
151
n3:tvurceVysledku
Novelletto, Andrea Černý, Viktor Bučková, Jana
n3:wos
000318040200002
s:issn
0002-9483
s:numberOfPages
12
n10:doi
10.1002/ajpa.22236
n20:organizacniJednotka
11310