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MtDNA and Y-chromosome variation in Kurdish groups
Ivan Nasidze1, Dominique Quinque, Murat Ozturk
1Max Planck Institute for Evolutionary Anthropology, Department of Evolutionary Genetics, Deutscher Platz 6, D-04103 Leipzig, Germany. nasidze@eva.mpg.de
Annals of Human Genetics
|July 6, 2005
Summary
Genetic analysis of Kurdish-speaking groups reveals their closest ties to West Asian populations. Maternal and paternal histories show distinct relationships with European and Caucasian groups, with no evidence of admixture in Georgian Kurds.
Area of Science:
- Population Genetics
- Human Migration Studies
- Anthropology
Background:
- Understanding the origins and genetic relationships of ethno-linguistic groups is crucial for human history.
- Kurdish-speaking populations represent a significant ethno-linguistic group in West Asia with debated origins.
Purpose of the Study:
- To investigate the genetic origins and relationships of Zazaki and Kurmanji speakers from Turkey and Georgia.
- To compare the genetic affinities of Kurdish groups with neighboring West Asian, Caucasian, and European populations.
Main Methods:
- Analysis of mitochondrial DNA (mtDNA) HV1 sequences.
- Typing of eleven Y-chromosome bi-allelic markers and 9 Y-STR loci.
- Comparative analysis with existing genetic data from diverse populations.
Main Results:
- Kurdish groups exhibit the highest genetic similarity to West Asian populations and the most distant relationship to Central Asian groups.
- Mitochondrial DNA suggests closer links to European than Caucasian groups, while Y-chromosome data indicate the reverse.
- The Georgian Kurdish population shows evidence of a bottleneck effect post-migration and no detectable admixture with local Georgian populations.
- Genetic data do not support a Northern Iranian origin for the Zazaki-speaking group; they are genetically closer to other Kurdish groups.
Conclusions:
- Kurdish populations possess distinct maternal and paternal genetic histories.
- The Georgian Kurdish migration to the Caucasus involved a bottleneck and limited gene flow from surrounding populations.
- Genetic evidence supports the internal cohesion of Kurdish groups and refutes specific hypotheses about Zazaki origins.