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Genetic Origins of the Cuban Population

May 14, 2011

I found this journal article that talks about the genetics of the Cuban population: Genetic origin, admixture, and asymmetry in maternal and paternal human lineages in Cuba by Mendizabal, Isabel, et al. It’s interesting that it validates the DNA results of my own family. Also this was done with simple mtdna and y-dna. I wonder if they would get more Native American descendants if they did a new study on autosomal DNA. For instance, I don’t have a NA mitochondrial or y haplogroup but I do have a small NA signature scattered around my chromosomes.

Here’s the abstract and below is a link to the whole article. 

Abstract:

Background Before the arrival of Europeans to Cuba, the island was inhabited by two Native American groups, the Tainos and the Ciboneys. Most of the present archaeological, linguistic and ancient DNA evidence indicates a South American origin for these populations. In colonial times, Cuban Native American people were replaced by European settlers and slaves from Africa. It is still unknown however, to what extent their genetic pool intermingled with and was ‘diluted’ by the arrival of newcomers. In order to investigate the demographic processes that gave rise to the current Cuban population, we analyzed the hypervariable region I (HVS-I) and five single nucleotide polymorphisms (SNPs) in the mitochondrial DNA (mtDNA) coding region in 245 individuals, and 40 Y-chromosome SNPs in 132 male individuals. Results The Native American contribution to present-day Cubans accounted for 33% of the maternal lineages, whereas Africa and Eurasia contributed 45% and 22% of the lineages, respectively. This Native American substrate in Cuba cannot be traced back to a single origin within the American continent, as previously suggested by ancient DNA analyses. Strikingly, no Native American lineages were found for the Y-chromosome, for which the Eurasian and African contributions were around 80% and 20%, respectively. Conclusion While the ancestral Native American substrate is still appreciable in the maternal lineages, the extensive process of population admixture in Cuba has left no trace of the paternal Native American lineages, mirroring the strong sexual bias in the admixture processes taking place during colonial times.

Article on the Genetic Origin of Cuba’s Population.

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One Comment leave one →
  1. El General permalink
    December 6, 2013 7:01 am

    Cuba went through a demographic change. Much of Cuba is mulatto now. These findings are on Cubans from Cuba, the Miami population should have a different set of autosomals.

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