Y-Chromosome STRs

Y-chromosome STRs are demonstrating value in the forensic identification of male DNA from sexual assault cases. Other applications for Y-STRs include tracing paternal lineages to aid in missing persons investigations and historical studies and to help link families through genetic genealogy.

General Information

Commercial Y-STR Kits

Haplotype Databases


  • U.S. Consolidated Y-STR Database (32,972 haplotypes with 11 loci): http://www.usystrdatabase.org/

    • 11 loci haplotype (DYS19, DYS385a/b, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS438, DYS439): 32,972 haplotypes

    • 12 loci haplotype (+DYS437): 29,904

    • 17 loci haplotype (+ DYS448, DYS456, DYS458, DYS635, YGATAH4): 23,169

    • 23 loci haplotype (+DYS481, DYS533, DYS549, DYS570, DYS576, DYS643): 4,837


Y Chromosome Links

NIST Human Identity Project Team Y-Chromosome Work

Some of our presentations on Y-chromosome work at NIST (see http://www.cstl.nist.gov/biotech/strbase/NISTpub.htm for full listing)



Last Updated: 04/10/2014