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Y-chromosome variation in a Norwegian population sample.

B M Dupuy1, R Andreassen, A G Flønes

  • 1Institute of Forensic Medicine, University of Oslo, The National Hospital, 0027, Oslo, Norway. b.m.dupuy@labmed.uio.no

Forensic Science International
|March 15, 2001
PubMed
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This study details Y-chromosome DNA profiles from 300 Norwegian males, using short tandem repeats (STRs) and single nucleotide polymorphisms (SNPs). Findings reveal high within-population variation and low inter-population differentiation, crucial for forensic and population genetics.

Area of Science:

  • Population Genetics
  • Forensic Science
  • Human Genetics

Background:

  • Y-chromosome DNA profiles are valuable for population genetics and forensic applications.
  • Understanding genetic variation within and between populations is essential for these fields.

Purpose of the Study:

  • To characterize the Y-chromosome DNA profiles of 300 Norwegian males.
  • To evaluate allele distributions, haplotype diversity, and mutation rates for forensic and population genetics applications.

Main Methods:

  • DNA profiling using eight short tandem repeats (STRs) and one single nucleotide polymorphism (SNP).
  • Minisatellite variant repeat PCR (MVR-PCR) to analyze minisatellite locus DYF155S1 structure and deletions.
  • Mutation analysis in 150 father/son pairs.

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Main Results:

  • 177 distinct haplotypes were identified among 300 individuals, with high within-population variation (Fst < 0.015).
  • Two major haplogroups (Tat/T and Tat/C) were identified, with Tat/C found in 5.7% of Norwegians, similar to Finnish populations.
  • An average mutation frequency of 0.0042 was observed in father/son pairs.

Conclusions:

  • The Y-chromosome DNA profiles provide a robust dataset for Norwegian population genetics and forensic casework.
  • High haplotype diversity and low population differentiation suggest the markers are effective for distinguishing individuals within this population.
  • The identified haplogroups and mutation rates offer insights into Y-chromosome evolution and population history.