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.

See also

• List of DYS markers
• Tandem repeat
• Genealogical DNA test
• List of Y-STR public databases

External links

Diagrams

• National Institute of Standards and Technology (NIST) — Y STR Positions along Y Chromosome

Fact sheets

• National Institute of Standards and Technology (NIST) — Summary List of Y Chromosome STR Loci and Available Fact Sheets
• National Institute of Standards and Technology (NIST) — STR Fact Sheets
• dna.reinyday.com — DYS464

Databases

• yhrd.org — Y-STR Haplotype Reference Database
• ysearch.org — T-DNA database
• ybase.org — Y-chromosome marker database

Repetitive DNA sequences | Genetic genealogy