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Forensic and phylogenetic analyses of populations in the Tibetan-Yi corridor using 41 Y-STRs

Abstract

Y-chromosome haplotypes of 527 non-related males (176 Han, 186 Tibetan, and 165 Yi) in the Tibetan-Yi corridor were analyzed using SureID® PathFinder Plus. In the populations of Han, Tibetans, and Yi, the haplotype diversity was 0.9989, 0.9981, and 0.9993, respectively, and the discrimination capacity was 0.9148, 0.8925, and 0.9576, respectively. Phylogenetic relationships among 12 studied ethnic groups and 7 other ethnic groups in the Tibetan-Yi corridor were investigated. Both multi-dimensional scaling analysis and phylogenetic reconstructions indicated that Tibetans appeared separated from the Han and Yi ethnic groups in the Tibetan-Yi corridor. Their genetic homogeneity or heterogeneity has not entirely been affected by their geographical distance and linguistic origin.

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Acknowledgments

The authors are grateful to the voluntary participants in this study.

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Correspondence to Guang-Yao Fan.

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This study was reviewed and approved by the Ethics Committee of Shaoxing University. All voluntary participants read and signed an informed consent form in compliance with the Declaration of Helsinki [8].

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The authors declare that they have no competing interests.

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Fan, GY., Zhang, ZQ., Tang, PZ. et al. Forensic and phylogenetic analyses of populations in the Tibetan-Yi corridor using 41 Y-STRs. Int J Legal Med 135, 783–785 (2021). https://doi.org/10.1007/s00414-020-02453-3

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Keywords

  • Y-chromosomal STR
  • Forensic genetics
  • Phylogenetic reconstruction, Population genetics, Tibetan-Yi corridor