Tracing the allochthonous haplogroups of Peru throughout uniparental DNA markers; [Traçando os haplogrupos alóctones do Peru através dos marcadores de DNA uniparentais]

Sandoval J.R.; Danós P.; Santos F.R.; Fujita R. · Revista Argentina de Antropologia Biologica (2025) · DOI: 10.24215/18536387e093

Resumen

It is well known that current Peruvian populations were formed by genetic contributions mainly coming from America, Eurasia, and Africa. It is also recognized that the initial population admixture primarily occurred between European men and Peruvian autochthonous women. However, there are few studies related to the genetic analysis of the allochthonous haplogroups. Thus, using the combination of the SNPs and STRs of the Y chromosome (patrilineal inheritance), the present study traces the allochthonous male immigration in the post-Columbian period, and reveals that this component constitutes about 23% of the Peruvian population. Of this proportion, the highest contribution was made by R1b haplogroup (frequent in the Iberian Peninsula and throughout Western Europe), followed by E1b1b (frequent in North Africa and the Mediterranean). Moreover, there is a contribution from other haplogroups, although in low proportions. Our results confirm that the allochthonous paternal contribution in the Peruvian gene pool is predominantly from European and African populations. Besides, through DNA sequencing of mitochondrial control region, the data show that the overall allochthonous maternal contribution is too low (~ 3%), compared to the highest autochthonous mtDNA haplogroups found in Peruvian populations.

Instituciones: Universidad de San Martín de Porres