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.

Databases

In genetic genealogy, the following is a list of sponsored databases containing publicly submitted surnames and Y-STR haplotypes:

• YHRD.org
• Ybase
• ySearch

Haplogroup specific data:

• Haplozone: The E-M35 Phylogeny Project (former E3b Project)
• yJdb - The Y-haplogroup J database

See also

• List of DYS markers
• Tandem repeat
• Genealogical DNA test

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
• Y-STR markers — Details and statistics

Databases

• dna.reinyday.com - About Public Databases
• yhrd.org — Y-STR Haplotype Reference Database
• ysearch.org — T-DNA database
• ybase.org — Y-chromosome marker database

Tutorials

• Y-STR Marker Types
• Calculation of Genetic Distance
• STR training materials