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Related Experiment Videos

Y-chromosome STR haplotypes in Danes.

Charlotte Hallenberg1, Karsten Nielsen, Bo Simonsen

  • 1Department of Forensic Genetics, Institute of Forensic Medicine, University of Copenhagen, 11 Frederik V's Vej, 2100 Copenhagen Ø, Denmark. charlotte.hallenberg@forensic.ku.dk

Forensic Science International
|October 18, 2005
PubMed
Summary

This study analyzed Y-chromosome STRs in 185 Danish males, revealing high haplotype diversity (0.9985) with 144 unique haplotypes. A novel variant allele in DYS392 was identified and sequenced.

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Area of Science:

  • Forensic genetics
  • Population genetics
  • Human genetics

Background:

  • Y-chromosome Short Tandem Repeats (STRs) are crucial for forensic identification and population studies.
  • Understanding Y-STR diversity in specific populations is essential for accurate forensic casework.
  • Previous Y-STR data for the Danish population was limited.

Purpose of the Study:

  • To characterize the Y-STR profiles of a Danish male population.
  • To assess the genetic diversity and haplotype resolution of specific Y-STR loci.
  • To identify any novel Y-STR variants within the studied population.

Main Methods:

  • Genotyping of 11 Y-STR loci (DYS19, DYS385a/b, DYS389-I, DYS389-II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439) in 185 unrelated Danish males.

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  • Utilized commercial kits: PowerPlex Y, ReliaGene Y-Plex 6, and ReliaGene Y-Plex 5.
  • Sequencing of a variant allele observed at the DYS392 locus.

    • Main Results:

    • A total of 163 distinct haplotypes were observed among 185 individuals.
    • 144 out of 163 haplotypes were unique, indicating high discriminatory power.
    • The overall gene diversity was calculated to be 0.9985.
    • A variant allele at DYS392, migrating as 10.2, was detected and sequencing revealed an upstream deletion.

    Conclusions:

    • The analyzed Y-STR loci provide high haplotype diversity and discrimination power for the Danish male population.
    • The identified Y-STR variant at DYS392 represents a potentially useful marker for population genetics and forensic applications.
    • This dataset contributes valuable genetic information for the Danish population, enhancing forensic investigations.