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A genetic portrait of the South‐Eastern Carpathians based on autosomal short tandem repeats loci used in forensics
Author(s) -
Benvisto Alessandro,
Messina Francesco,
Finocchio Andrea,
Popa Luis,
Stefan Mihaela,
Stefanescu Gheorghe,
Mironeanu Catalin,
Novelletto Andrea,
Rapone Cesare,
Berti Andrea
Publication year - 2018
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.23139
Subject(s) - microsatellite , geography , loss of heterozygosity , evolutionary biology , peninsula , biology , allele frequency , allele , cartography , genetics , archaeology , gene
Objectives This work aimed to describe the genetic landscape of the Balkan Peninsula, as revealed by STR markers commonly used in forensics and spatial methods specifically developed for genetic data. Methods We generated and analyzed 16 short tandem repeats (STRs) autosomal genotypes in 287 subjects from ten administrative/geographical regions of Eastern Europe (Romania and the Republic of Moldova). We report estimates of the allele frequencies in these sub‐populations, their fixation indexes, and use these results to complement previous spatial analyses of Southern Europe. Results In seven out of ten analyzed regional samples the heterozygosity, averaged across loci, was lower than expected. The average Fis was 0.011. Among the 16 loci, five returned a significant fixation index Fst. The composite Fst across the 16 loci, among the 10 regional samples, was 0.00417, a figure twice as large as that obtained with the same markers across the entire Northern Mediterranean. The first spatial principal component (sPC1) returned the picture of a Central‐European pattern of frequencies for the Carpathians, which extended to the Southern boundary of the Balkan Peninsula. However, the 8 alleles extracted by sPC1 returned a picture of a strong reduction of the migration rate in the Carpathian region, mostly between the inner locations. Conclusions Our results revealed an unexpected heterogeneity in the area. We believe that populations from some regions will require treatment as distinct entities when considered in forensic applications.