2001
DOI: 10.1086/320601
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Genetic Differentiation in South Amerindians Is Related to Environmental and Cultural Diversity: Evidence from the Y Chromosome

Abstract: The geographic structure of Y-chromosome variability has been analyzed in native populations of South America, through use of the high-frequency Native American haplogroup defined by the DYS199-T allele and six Y-chromosome-linked microsatellites (DYS19, DYS389A, DYS389B, DYS390, DYS391, and DYS393), analyzed in 236 individuals. The following pattern of within- and among-population variability emerges from the analysis of microsatellite data: (1) the Andean populations exhibit significantly higher levels of wi… Show more

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Cited by 179 publications
(207 citation statements)
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“…In particular, within the Y chromosome native haplogroup Q, the STR haplotypes show very high variance between populations within Amazonia, but greater homogeneity in the Andes, confirming a tendency previously reported (Luiselli et al, 2000;Tarazona-Santos et al, 2001;Fuselli et al, 2003;Barbieri et al, 2011;Bisso-Machado et al, 2012-see Table 2). The NJ tree for the Y chromosome R ST distances (Supporting Information Fig.…”
Section: Genetic Structure Within the South American Continentsupporting
confidence: 86%
See 1 more Smart Citation
“…In particular, within the Y chromosome native haplogroup Q, the STR haplotypes show very high variance between populations within Amazonia, but greater homogeneity in the Andes, confirming a tendency previously reported (Luiselli et al, 2000;Tarazona-Santos et al, 2001;Fuselli et al, 2003;Barbieri et al, 2011;Bisso-Machado et al, 2012-see Table 2). The NJ tree for the Y chromosome R ST distances (Supporting Information Fig.…”
Section: Genetic Structure Within the South American Continentsupporting
confidence: 86%
“…Within South America, genetic structure broadly follows the two contrasts between the environments of the Andes and Amazonia, and their respective cultural trajectories over many millennia (Tarazona-Santos et al, 2001). In particular, within the Y chromosome native haplogroup Q, the STR haplotypes show very high variance between populations within Amazonia, but greater homogeneity in the Andes, confirming a tendency previously reported (Luiselli et al, 2000;Tarazona-Santos et al, 2001;Fuselli et al, 2003;Barbieri et al, 2011;Bisso-Machado et al, 2012-see Table 2).…”
Section: Genetic Structure Within the South American Continentsupporting
confidence: 80%
“…If genotypes are introduced into a population from another population, then the presence of these new genotypes will skew the distribution of genetic effects toward the axis of divergence between populations. However, previous studies in lowland South Amerindian populations suggest that gene flow was a restricted force in comparison with genetic drift (21). Furthermore, ethnographic studies reveal a strong cultural and reproductive isolation between Xavánte and Kayapó, which probably triggered the genetic drift experienced by the Xavánte, despite its linguistic affinity and recent divergence (12,14).…”
Section: Resultsmentioning
confidence: 95%
“…Only the South American sample shows a Tajima's D statistic significantly higher than expected under models with recombination (r40.002) and exponential population growth (Table 1; 50 In the case of the South Amerindian sample, there is evidence of admixture with European populations as well as a recent population bottleneck. 51 Thus, we cannot easily distinguish between balancing selection or demographic history as an explanation for the observed positive D value.…”
Section: Evolutionary Inferences and Tests Of Selectionmentioning
confidence: 95%
“…We sequenced 3950 bp encompassing the promoter and coding region of IL13 in 132 individuals belonging to 11 worldwide populations from West Africa (14 Igbo, 14 Yoruba and seven Fulani from Nigeria collected by SAT), East Africa (17 Hadza, 10 Maasai from Tanzania collected by SAT), Europe (10 North Europeans and 10 Russians from the Coriell cell repository), Asia (10 Chinese from the Coriell cell repository) and South America (nine Cayapa from Ecuador, 17 Peruvian Quechua from Tayacaja and 13 from San Martin de Pangoa 51,56 ). All samples were collected with informed consent of the donors and the study was performed under Institutional Review Board approval.…”
Section: Populations Sampledmentioning
confidence: 99%