2004
DOI: 10.1590/s1415-47572004000400004
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Abstract: The allelic variability of four dinucleotide microsatellites located in the HLA region (MOGc, D6S265, MIB, and TNFa) was analyzed in 67 individuals representing three Amerindian populations of the Argentine Gran Chaco: Toba, Wichi and Chorote. Genomic DNA was prepared from peripheral blood and DNA was extracted using the standard phenol-chloroform procedure. Alleles were identified by PCR, using an end-labelled reverse oligonucleotide primer (fluorescent 6 -Fam labeling). Despite the low number of samples stud… Show more

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Cited by 11 publications
(12 citation statements)
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“…These ndings might be caused by a process of genetic drift that seems to be enhanced by their social behavior, since they live in households apart from other native and nonnative groups. The geographic isolation and the extreme environmental conditions can also be considered major factors contributing to the population differentiation, which might be higher than for the Wichí living in the provinces of Formosa (Crossetti et al 2008) and Salta (Goicoechea et al 2001;Dejean et al 2004). …”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…These ndings might be caused by a process of genetic drift that seems to be enhanced by their social behavior, since they live in households apart from other native and nonnative groups. The geographic isolation and the extreme environmental conditions can also be considered major factors contributing to the population differentiation, which might be higher than for the Wichí living in the provinces of Formosa (Crossetti et al 2008) and Salta (Goicoechea et al 2001;Dejean et al 2004). …”
Section: Discussionmentioning
confidence: 99%
“…On the other hand, the occurrence of gene ow among Wichí, Chorote, and Toba has been suggested in a study of native groups from Salta Province (Dejean et al 2004).…”
mentioning
confidence: 99%
“…However, despite the greater volume of data available (Bailliet et al, 1994;Bianchi et al, 1998;Mesa et al, 2000;Moraga et al, 2000;Rodriguez-Delfin et al, 2001;Tarazona-Santos et al, 2001;Salzano, 2002), numerous questions still remain unanswered, in particular those regarding the ancient populations of South America. Indeed, studies concerning the genetic diversity of extinct populations are still rare, notably for regions such as North-Western Argentina (NWA) (Dejean et al, 2004;Goicoechea et al, 2001). Thus, questions related to the evolution of populations in this region, the relationships among them, or the processes of admixture, remain unexplored.…”
mentioning
confidence: 99%
“…The biological variation of the native populations of Argentina and the southernmost region of South America has been extensively studied, through the study of morphological (Cocilovo andDi Rienzo, 1984-1985;Cocilovo andNeves, 1988-1989;Rothammer et al, 1984Rothammer et al, , 1988Rothammer et al, -1989Lahr, 1995;Lalueza et al, 1996;Hernández et al, 1997;Marcellino and Colantonio, 2000;Gonzá lez-José et al, 2001a,b, 2003Fabra et al, 2005), and molecular data (Dipierri et al, 1998(Dipierri et al, , 2000Demarchi, 2000;Demarchi et al, 2001;Goicoechea et al, 2001;Dejean et al, 2004;Cabana et al, 2006). However, questions about the origins and strategies of dispersion of the colonizer populations remain unresolved and controversial, in part because the extinct populations that once inhabited the central mountains of Argentina, archaeologically known as Sierras Centrales, have received little attention (Ameghino, 1885(Ameghino, , 1889González, 1944;Cocilovo, 1984;Marcellino, 1992;Marcellino and Colantonio, 1993).…”
mentioning
confidence: 99%