Related Experiment Video
Updated: Jun 13, 2026

Application of DNA Fingerprinting using the D1S80 Locus in Lab Classes
Published on: July 17, 2021
Haplotype data for 12 Y-chromosome STR loci of Sri Lankans
Ruwan J Illeperuma1, Dinuka Markalanda, Joanna L Mountain
1Department of Pediatrics, Division of Genetic Medicine, HSB RR337, University of Washington, Seattle, WA 98195, USA. ruwanille@yahoo.com
Abstract:
Haplotype data estimated from 12 Y-chromosomal STRs were obtained from a sample of 207 unrelated male individuals from Sri Lanka. A total of 195 different haplotypes were identified, of which 183 were unique. Haplotype diversity was found be high (0.9948+/-0.0012) indicating increased discriminating capacity of these 12 Y-STR loci in forensic identification of Sri Lankan individuals. DYS385, representing two loci, was the most diverse marker (0.853). The lowest diversity (0.351) was observed with DYS391.
Related Concept Videos
The Y Chromosome Determines Maleness
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Pedigree Analysis
X and Y Chromosomes
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
Karyotyping
Sex-linked Disorders
X-linked Traits

