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Monday, September 28, 2015

Origins and uniparental genetic structure of European Roma

The EJHG has a new paper on the Y-DNA and mtDNA of European Roma. The main text is behind a paywall, but the images and supplementary info are freely available here and here, respectively. Interesting quote:

In agreement with our results, no traces of [Roma-specific] haplogroups H-M52, H-M82, or I-P259 were found in an extensive data set of 3136 non-Roma Europeans typed at similar resolution (472 Germans, 96 Danish, 340 Belgians, 90 Dutch, 370 Czechs, 520 Polish, 221 individuals from the United Kingdom, and 1027 Italians, from the Genographic project database, unpublished data), supporting our power to define founder lineages using our data set. With the exception of Hungary, for the reasons mentioned above, the presence of founder lineages in host populations confirms limited male gene flow from Roma to host. In contrast, male gene flow from hosts to Roma is much more frequent, although variable, ranging between 17% in Romania and up to 46% in Hungary.

Martínez-Cruz et al., Origins, admixture and founder lineages in European Roma, European Journal of Human Genetics advance online publication, 16 September 2015; doi:10.1038/ejhg.2015.201


Krefter said...

Wow, there's loads of high coverage Y and mtDNA data from host populations. Thanks for sharing.

AWood said...

Kind of interesting that a rare I1 branch turns out to be a founder branch from a local European in Roma. I'm certain some of that J2a, R1a-Z93, and R2 is of authentic Roma stock, but just didn't go through a founder effect.

J2-M172 Y-Hg Research said...

"high coverage Y": we could only found the usual Y-STR19 plus some Y-SNPs data in the Supp Table S2. Is there more?

capra internetensis said...

Underhill tested a bunch of Roma R1a and it was almost all M780 (except the Slovakian sample who had mostly local Z282). So yeah the Z93 is almost certainly Indian.