Y‐STR analysis in Brazilian and South Amerindian populations

Leite, Fabio P.N.; Callegari-Jacques, Sídia M.; Carvalho, Bianca A.; Kommers, Trícia; Matte, Cecília H.F.; Raimann, Paulo Eduardo; Schwengber, Solange P.; Sortica, Vinicius Albuquerque; Tsuneto, Luiza Tamie; Petzl-Erler, María Luiza; Salzano, Francisco M.; Hutz, Mara H.

doi:10.1002/ajhb.20702

Cited by 23 publications

(14 citation statements)

References 14 publications

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“…Affinities of the paternal lineages are less clear, which can be due to the paucity of available data on the Y-STR of Amerindian populations limiting the comparisons which can be made (Fondevila, et al, 2003;García-Bour et al, 2004;Tovar et al, 2006;Lee et al, 2007;Leite et al, 2008;Tirado et al, 2008;Toscanini et al, 2008). However, the allelic diversity and haplotype distribution observed seem to link PG with Amerindian populations like the Equatorian Kichwas (Gonzalez-Andrade et al, 2008).…”

Section: Links Between Pg and Andean Populationsmentioning

confidence: 59%

Paleogenetical study of pre‐Columbian samples from Pampa Grande (Salta, Argentina)

Carnese

Mendisco

Keyser

et al. 2009

American J Phys Anthropol

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Ancient DNA recovered from 21 individuals excavated from burial sites in the Pampa Grande (PG) region (Salta province) of North-Western Argentina (NWA) was analyzed using various genetic markers (mitochondrial DNA, autosomal STRs, and Y chromosomal STRs). The results were compared to ancient and modern DNA from various populations in the Andean and North Argentinean regions, with the aim of establishing their relationships with PG. The mitochondrial haplogroup frequencies described (11% A, 47% B, and 42% D) presented values comparable to those found for the ancient Andean populations from Peru and San Pedro de Atacama. On the other hand, mitochondrial and Y chromosomal haplotypes were specific to PG, as they did not match any other of the South American populations studied. The described genetic diversity indicates homogeneity in the genetic structure of the ancient Andean populations, which was probably facilitated by the intense exchange network in the Andean zone, in particular among Tiwanaku, San Pedro de Atacama, and NWA. The discovery of haplotypes unique to PG could be due to a loss of genetic diversity caused by recent events affecting the autochthonous populations (establishment of the Inca Empire in the region, colonization by the Europeans).

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Section: Links Between Pg and Andean Populationsmentioning

confidence: 59%

Paleogenetical study of pre‐Columbian samples from Pampa Grande (Salta, Argentina)

Carnese

Mendisco

Keyser

et al. 2009

American J Phys Anthropol

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“…Nevertheless, for most studies on Y chromosome diversity in Brazilian populations, only Y-STRs (e.g., [19,30,31,32,33]) or just a restricted number of SNP markers (e.g., [26,34,35]) were studied, which often limited the accuracy of ancestry estimates derived from the three continents. Regarding the studies on the mtDNA variability in Brazilian populations, a very high percentage has been dedicated to small communities of Native Americans and Afro-descendants (e.g., [15]), but only few describe the composition of urban admixed populations [16,36].…”

Section: Discussionmentioning

confidence: 99%

Revisiting the Genetic Ancestry of Brazilians Using Autosomal AIM-Indels

et al. 2013

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There are many different studies that contribute to the global picture of the ethnic heterogeneity in Brazilian populations. These studies use different types of genetic markers and are focused on the comparison of populations at different levels. In some of them, each geographical region is treated as a single homogeneous population, whereas other studies create different subdivisions: political (e.g., pooling populations by State), demographic (e.g., urban and rural), or ethnic (e.g., culture, self-declaration, or skin colour). In this study, we performed an enhanced reassessment of the genetic ancestry of ~ 1,300 Brazilians characterised for 46 autosomal Ancestry Informative Markers (AIMs). In addition, 798 individuals from twelve Brazilian populations representing the five geographical macro-regions of Brazil were newly genotyped, including a Native American community and a rural Amazonian community. Following an increasing North to South gradient, European ancestry was the most prevalent in all urban populations (with values up to 74%). The populations in the North consisted of a significant proportion of Native American ancestry that was about two times higher than the African contribution. Conversely, in the Northeast, Center-West and Southeast, African ancestry was the second most prevalent. At an intrapopulation level, all urban populations were highly admixed, and most of the variation in ancestry proportions was observed between individuals within each population rather than among population. Nevertheless, individuals with a high proportion of Native American ancestry are only found in the samples from Terena and Santa Isabel. Our results allowed us to further refine the genetic landscape of Brazilians while establishing the basis for the effective application of an autosomal AIM panel in forensic casework and clinical association studies within the highly admixed Brazilian populations.

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“…However, a recent investigation with a larger sample size reported a different picture for this scenario. 80 Y-chromosome admixture estimates obtained from southern Brazilians showed 92% European, 5% African, and 3% Native American contributions indicating that, despite the high percentage of the European participation, there is a non-negligible African and a residual Amerindian contribution of Y chromosomes to this population as well.…”

Section: Ethnic Characteristics Of the Brazilian Populationmentioning

confidence: 99%