Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina
The Wichí people from Chaco Province inhabit the region called Impenetrable Chaqueño, where the climatic conditions are extreme. Besides scarce communication with the main urban centers, the cultural patterns of the Wichí cause these communities to live in certain degree of isolation. The effect of...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15346617_v85_n5_p687_Glesmann http://hdl.handle.net/20.500.12110/paper_15346617_v85_n5_p687_Glesmann |
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paper:paper_15346617_v85_n5_p687_Glesmann2023-06-08T16:20:03Z Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina genetic marker microsatellite DNA American Indian Argentina Caucasian epidemiology female gene frequency gene linkage disequilibrium genetic marker genetic variability genetics genotype geography human male X chromosome Argentina Chromosomes, Human, X European Continental Ancestry Group Female Gene Frequency Genetic Markers Genetic Variation Genotype Geography Humans Indians, South American Linkage Disequilibrium Male Microsatellite Repeats The Wichí people from Chaco Province inhabit the region called Impenetrable Chaqueño, where the climatic conditions are extreme. Besides scarce communication with the main urban centers, the cultural patterns of the Wichí cause these communities to live in certain degree of isolation. The effect of this situation is an increased genetic differentiation from other populations, as it was observed through autosomal and Y chromosome markers. However, the genetic variation of X chromosome has not yet been fully analyzed. The patterns of allele distribution of different markers of X chromosome can be highly informative in comparative studies, because its special features make this chromosome a potential source to uncover ethnic differences. The aim of this study was to assess the variation of X chromosome present in the Wichí population living around Misión Nueva Pompeya, in Chaco Province, and to identify particular variation of X-repetitive markers (short tandem repeats, X-STRs) in Chaco Amerindians. We genotyped Wichí for 10 noncoding X-STRs and compared them with a Mocoví population and with published data on individuals coming from European immigration. We found high homozygote proportion and linkage disequilibrium values for the X chromosome in the Wichí population. The data showed the Wichí to be more distant from nonnative people than was the Mocoví population analyzed for comparison. We also found certain differences with Mocoví, possibly due to a higher genetic flow of the latter with nonnatives. A process of genetic drift seems to be enhanced by the social behavior of the Wichí, since they live apart from other native and nonnative groups. The geographic isolation and the extreme environmental conditions can also be considered as major factors contributing to the population differentiation. Although we found no new allele or undescribed variation, the whole pattern of variation for these markers gives the Wichí a particular population identity. Copyright © 2014 Wayne State University Press, Detroit, Michigan 48201-1309. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15346617_v85_n5_p687_Glesmann http://hdl.handle.net/20.500.12110/paper_15346617_v85_n5_p687_Glesmann |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
genetic marker microsatellite DNA American Indian Argentina Caucasian epidemiology female gene frequency gene linkage disequilibrium genetic marker genetic variability genetics genotype geography human male X chromosome Argentina Chromosomes, Human, X European Continental Ancestry Group Female Gene Frequency Genetic Markers Genetic Variation Genotype Geography Humans Indians, South American Linkage Disequilibrium Male Microsatellite Repeats |
| spellingShingle |
genetic marker microsatellite DNA American Indian Argentina Caucasian epidemiology female gene frequency gene linkage disequilibrium genetic marker genetic variability genetics genotype geography human male X chromosome Argentina Chromosomes, Human, X European Continental Ancestry Group Female Gene Frequency Genetic Markers Genetic Variation Genotype Geography Humans Indians, South American Linkage Disequilibrium Male Microsatellite Repeats Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| topic_facet |
genetic marker microsatellite DNA American Indian Argentina Caucasian epidemiology female gene frequency gene linkage disequilibrium genetic marker genetic variability genetics genotype geography human male X chromosome Argentina Chromosomes, Human, X European Continental Ancestry Group Female Gene Frequency Genetic Markers Genetic Variation Genotype Geography Humans Indians, South American Linkage Disequilibrium Male Microsatellite Repeats |
| description |
The Wichí people from Chaco Province inhabit the region called Impenetrable Chaqueño, where the climatic conditions are extreme. Besides scarce communication with the main urban centers, the cultural patterns of the Wichí cause these communities to live in certain degree of isolation. The effect of this situation is an increased genetic differentiation from other populations, as it was observed through autosomal and Y chromosome markers. However, the genetic variation of X chromosome has not yet been fully analyzed. The patterns of allele distribution of different markers of X chromosome can be highly informative in comparative studies, because its special features make this chromosome a potential source to uncover ethnic differences. The aim of this study was to assess the variation of X chromosome present in the Wichí population living around Misión Nueva Pompeya, in Chaco Province, and to identify particular variation of X-repetitive markers (short tandem repeats, X-STRs) in Chaco Amerindians. We genotyped Wichí for 10 noncoding X-STRs and compared them with a Mocoví population and with published data on individuals coming from European immigration. We found high homozygote proportion and linkage disequilibrium values for the X chromosome in the Wichí population. The data showed the Wichí to be more distant from nonnative people than was the Mocoví population analyzed for comparison. We also found certain differences with Mocoví, possibly due to a higher genetic flow of the latter with nonnatives. A process of genetic drift seems to be enhanced by the social behavior of the Wichí, since they live apart from other native and nonnative groups. The geographic isolation and the extreme environmental conditions can also be considered as major factors contributing to the population differentiation. Although we found no new allele or undescribed variation, the whole pattern of variation for these markers gives the Wichí a particular population identity. Copyright © 2014 Wayne State University Press, Detroit, Michigan 48201-1309. |
| title |
Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| title_short |
Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| title_full |
Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| title_fullStr |
Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| title_full_unstemmed |
Genetic Variation of X-STRs in the Wichí Population from Chaco Province, Argentina |
| title_sort |
genetic variation of x-strs in the wichí population from chaco province, argentina |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15346617_v85_n5_p687_Glesmann http://hdl.handle.net/20.500.12110/paper_15346617_v85_n5_p687_Glesmann |
| _version_ |
1768542051935191040 |