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<p>Short tandem repeats of the Y chromosome (Y-STRs) are powerful genetic markers for investigating paternity testing and widely used in forensic population genetics research. However, it is necessary to obtain haplotype reference database, as well as knowing the structure and forensic parameters of the population, in order to obtain a higher degree of certainty in forensic cases. The aim of this study was to investigate the genetic diversity of a sample about 774 healthy unrelated Dai male individuals from Yunnan province, Southwest of China through the analysis of 37 Y chromosomal STR loci included in the Goldeneye™ Y Plus PCR Amplification Kit. Genetic relationships were analyzed using YHRD’s AMOVA tools and MEGA 6.0 software. A total of 548 haplotypes were detected, out of which 420 were unique. The overall haplotype diversity (HD) and discrimination capacity (DC) were 0.9990 and 0.7080, respectively. The gene diversity (GD) ranged from 0.0256 (DYS645) to 0.9141 (DYF404S1). Phylogenetic analysis demonstrated that Tai-Kadai language speaking groups presented a closer genetic relationship than other groups. Our results not only established the Chinese Dai population databases, but also provided valuable information for forensic paternity identification and human genetics.</p>

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Tai-Kadai-speaking Yunnan Dai population: Forensic features and population structure

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Xiufeng Zhang,
  • Kunya Li,
  • Xingru Chen

摘要

Short tandem repeats of the Y chromosome (Y-STRs) are powerful genetic markers for investigating paternity testing and widely used in forensic population genetics research. However, it is necessary to obtain haplotype reference database, as well as knowing the structure and forensic parameters of the population, in order to obtain a higher degree of certainty in forensic cases. The aim of this study was to investigate the genetic diversity of a sample about 774 healthy unrelated Dai male individuals from Yunnan province, Southwest of China through the analysis of 37 Y chromosomal STR loci included in the Goldeneye™ Y Plus PCR Amplification Kit. Genetic relationships were analyzed using YHRD’s AMOVA tools and MEGA 6.0 software. A total of 548 haplotypes were detected, out of which 420 were unique. The overall haplotype diversity (HD) and discrimination capacity (DC) were 0.9990 and 0.7080, respectively. The gene diversity (GD) ranged from 0.0256 (DYS645) to 0.9141 (DYF404S1). Phylogenetic analysis demonstrated that Tai-Kadai language speaking groups presented a closer genetic relationship than other groups. Our results not only established the Chinese Dai population databases, but also provided valuable information for forensic paternity identification and human genetics.