Mitochondrial DNA Studies Show Asymmetrical Amerindian Admixture in Afro-Colombian and Mestizo Populations

Rodas, Clemencia; Gélvez, Nancy; Keyeux, Genoveva

doi:10.1353/hub.2003.0026

Cited by 50 publications

(52 citation statements)

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“…Similar results have been obtained by Carvajal-Carmona et al (2000) and Rodas et al (2003) in the Mestizos of Colombia (respectively 90% of Amerindian mtDNA in Medellín and 78% in Bogotá). As for five African-derived communities of that country Rodas et al (2003) found 19% of Amerindian mtDNA, while Ribeiro-dos-Santos et al (2002) observed an even higher prevalence (47%) in Curiaú, a semi-isolated Amazonian Afro-Brazilian community.…”

Section: Historical Genetics -Ethnic Parental Contributions In Latin supporting

confidence: 89%

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Interethnic variability and admixture in Latin America - social implications

Salzano

2014

RBT

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Past and present attempts to classify and characterize the human biological variability are examined, considering the race concept, ethnic identification problems, assortative mating based on ethnicity, and historical genetics. In relation to the latter, a review is made of the methods presently available for admixture quantification and of previous studies aimed at the characterization of the parental continental contributions to Latin American populations, with emphasis in global evaluations of the Costa Rican and Brazilian gene pools. Finally, the question of racism and discrimination is considered, including the relation between human rights and affirmative actions. The right to equal opportunity should be strictly respected. Biological inequality has nothing to do with the ethical principle that someone's position in a given society should be an accurate reflection of her/his individual ability. Rev. Biol. Trop. 52(3): 405-415. Epub 2004 Dic 15.

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Section: Historical Genetics -Ethnic Parental Contributions In Latin supporting

confidence: 89%

“…As for five African-derived communities of that country Rodas et al (2003) found 19% of Amerindian mtDNA, while Ribeiro-dos-Santos et al (2002) observed an even higher prevalence (47%) in Curiaú, a semi-isolated Amazonian Afro-Brazilian community.…”

Section: Historical Genetics -Ethnic Parental Contributions In Latin mentioning

confidence: 86%

Interethnic variability and admixture in Latin America - social implications

Salzano

2014

RBT

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“…They also agree with the asymmetric sexual composition (Valenzuela, 1975(Valenzuela, , 1983(Valenzuela, , 1997Valenzuela et al, 1978Valenzuela et al, , 1980Zemelman et al, 2002). The SGC and the asymmetry of mating is well documented at present with molecular genetic markers in Chile (Acuña et al, 2002;Cifuentes et al, 2004) and in other Latin American populations (Rodas et al, 2003;Martínez et al, 2007).…”

Section: The "Standard Interpretation" Of the Sgcsupporting

confidence: 71%

Human Sociogenetics

Valenzuela

2011

Biol. Res.

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In three cities of Chile (Santiago, Valparaiso, Valdivia) the A allele and phenotype (ABO blood group) are more frequent in the higher socioeconomic strata (SES) and the O allele and phenotype are in the lower ones. This constitutes a structured sociogenetic cline (SGC). The B allele and phenotypes (B+AB) present a rather erratic or contradictory distribution among SES. This SGC was also found in England. The standard interpretation of the origin and maintenance of this SGC in Chile is founded on socio-ethno-historic-cultural and drift factors followed by socioeconomic assortative mating that has occurred since the origin of Chileans by the admixture of Europeans and Amerindians. This interpretation is insuffi cient to explain the coincidence of the cline in England and Chile, and for some fi ndings in Chile. 1) The A and Rh(-) frequencies of the highest SES in Chile are signifi cantly higher than those found in Europeans.2) The B gene and phenotypes (with AB) behave differently and in contradiction to the socio-ethno-cultural-historical process. 3) There is a signifi cant interaction of the SGC with gender in Chile and England. There is not at present a putative relationship between ABO and psycho-social factors that could account for this sociogenetic interaction. This SGC seems to be present in societies with a hierarchical organization in relation to power, prestige, ownership, income and life style, and when sampling includes the most extreme SES. It has not been found in two samples from Ireland and in a sample from Chile taken from a public hospital, probably because those variables and conditions were not ascertained.

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“…En los Nasa, Pastos, Emberá chamí y Guambiano, el ADN mitocondrial fue exclusivamente amerindio (Tosse, 2014;Xavier, et al, 2015), en cambio sus contrapartes cromosómicas-Y presentaron mezcla, especialmente los Pastos. En Coconucos y Yanaconas hubo mezcla mitocondrial no amerindia, pero en porcentajes inferiores al 6% (Xavier, et al, 2015), porcentaje mucho menor que en su contraparte en el Y, con lo cual se podría concluir que en la mayoría de las poblaciones indígenas analizadas se presenta un sesgo de apareamiento, siendo éste más marcado en los Pijaos (Y amerindios 8%; mtADN amerindio 91%), comportamiento de los grupos indígenas americanos previamente reportado (Rodas, et al, 2003;Novembre & Ramachandran, 2011), la gran excepción fueron los Emberá duma (cromosoma Y amerindio 82%; mtADN amerindio 79%).…”

Section: Discussionunclassified

Estructura genética de poblaciones indígenas del occidente colombiano mediante el uso de marcadores ligados al cromosoma Y

Franco¹,

Barreto

2017

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Artículo de posesión para el ingreso como miembro correspondiente de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales el 7 de junio de 2017 ResumenColombia presenta una amplia gama de etnias amerindias, sin embargo, es preocupante la escasa y fragmentada información genética que se tiene de ellas. Comprender su estructura genética y niveles de flujo génico es urgente para inferir las relaciones filogenéticas, origen y procesos de mestizaje ocurridos a través del tiempo. En el presente estudio, utilizando marcadores ligados al cromosoma Y (Y-STR, Y-SNP) se analizaron 204 amerindios del occidente colombiano (131 procesados en este trabajo y 73 con datos tomados de la literatura) pertenecientes a las etnias Nasa (Páez), Coyaima, Pijao, Pastos, Awakuaiker, Emberá duma, Coconuco, Guambiano (Misak), Emberá chamí y Yanaconas. El haplogrupo Q1a2a1a1*-M3 presentó la mayor frecuencia en las etnias estudiadas (58% en promedio). Con la excepción de Pijaos y Yanaconas (frecuencias del 17% y 40%, respectivamente), los haplogrupos de origen amerindio Q1a2a1a1*-M3 y Q1a2*-M346 (M242, xM3), analizados en conjunto, fueron los más frecuentes (68% en promedio), alcanzando valores superiores al 80% en los Emberas, Guambianos y Awa. Los haplogrupos para linaje europeo presentaron una frecuencia promedio del 15%, mientras los africanos 6% y de otras procedencias (J, I, F, T y G) 11%. Fue observado un conjunto de alelos Y-STRs en proceso de fijación en estas comunidades y una estructura genética significativa (R ST = 0.15129), mostrando a los Pastos aislados de los demás grupos indígenas, sugiriendo una procedencia migratoria diferente y la posible influencia de la orografía andina en el flujo génico indígena. El presente trabajo hace una contribución importante al esclarecimiento de la estructura genética amerindia del occidente colombiano. © 2017. Acad. Colomb. Cienc. Ex. Fis. Nat. Genetic Structure of Indigenous Groups in West Colombia by Using Y-Chromosome Markers. AbstractColombia has a wide range of Amerindian ethnicities. However, there is a scarce and fragmented genetic information on them. Therefore, is urgent, understanding their genetic structure and gene flow to infer their phylogenetic relationships, their origin and mixing processes occurring over time. In the present study, using markers linked to Y chromosome (Y-STR and Y-SNP) were analyzed 204 indigenous from western Colombia (131 processed in this work and 73 with data taken from literature) belonging to the ethnic Nasa (Páez), Coyaima, Pijao, Pastos, Awakuaiker, Emberá duma, Coconuco, Guambiano (Misak), Emberá chamí and Yanaconas. The haplogroup Q1a2a1a1 * -M3 had the highest frequency in the populations studied (58% on average). With the exception of Pijaos and Yanaconas (frequencies of 17% and 40%, respectively), the haplogroups of Amerindian origin Q1a2a1a1*-M3 y Q1a2*-M346 (M242, xM3), analyzed together, were the most frequent (68% on average), reaching values higher than 80% in the Emberas, Guambianos and Awa. Haplogroups for European lineage pre...

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Mitochondrial DNA Studies Show Asymmetrical Amerindian Admixture in Afro-Colombian and Mestizo Populations

Cited by 50 publications

References 35 publications

Interethnic variability and admixture in Latin America - social implications

Interethnic variability and admixture in Latin America - social implications

Human Sociogenetics

Estructura genética de poblaciones indígenas del occidente colombiano mediante el uso de marcadores ligados al cromosoma Y

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