Y-STR

A Y-STR is a short tandem repeat (STR) on the Y chromosome. Y-STRs are often designated by DYS numbers.

Y-STRs are often used in genealogical DNA testing.

Diagrams

 * National Institute of Standards and Technology (NIST) &mdash; Y STR Positions along Y Chromosome

Fact sheets

 * National Institute of Standards and Technology (NIST) &mdash; Summary List of Y Chromosome STR Loci and Available Fact Sheets
 * National Institute of Standards and Technology (NIST) &mdash; STR Fact Sheets
 * dna.reinyday.com &mdash; DYS464

Databases

 * yhrd.org &mdash; Y-STR Haplotype Reference Database
 * ysearch.org &mdash; T-DNA database
 * ybase.org &mdash; Y-chromosome marker database