Abstract
The autosomal short tandem repeat (STR) plays a unique role in population comparisons, phylogenetic reconstruction and migration history tracing. This study investigated the frequencies of 17 autosomal STR loci in the Han population from Wuxi, Eastern China, with the aim of expanding the available population information in human genetic databases and for forensic DNA analysis. The genetic polymorphisms of 17 STR loci were analysed in 5358 individuals of the Han population from Wuxi, Eastern China. Population comparisons including genetic distances, the neighbour-joining tree and multidimensional scaling plot were carried out between the Wuxi Han population and different ethnic groups. A total of 777 alleles at 17 autosomal STR loci were observed, with the corresponding allelic frequencies ranging from 0.0001–0.5210. The combined power of discrimination and exclusion for the 17 autosomal STR loci were 0.0000 and 0.000, respectively. Moreover, the phylogenetic analysis was performed between the Wuxi Han population and other relevant populations. The neighbour-joining tree and multidimensional scaling plot were generated based on Nei’s standard genetic distance. Population comparisons indicated that the Wuxi Han population had the closest genetic relationship with the Hubei Han population, relative to the other populations, which mirrors the historical and geographical background of the populations compared.
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