Distribution of the ABO system in the Argentine northwest: Miscegenation and genetic diversity

Based on the ABO system phenotypes of 95,562 individuals from the six pi-ev inces that constitute the Argentine northwest (Jujuy, Salta, Tucuman, Catam arca, La Rioja, and Santiago del Estero), allele frequency, heterozygosis, and genetic admixture, assuming three parental populations (American Indian , Spanish, and Black) was estimated. Although no significant interpopulatio n differences of allele frequencies were detected, their geographical distr ibution agreed with other sources of biological information and with ethnoh istorical and census data on this region's settlement.