The Reinyday Guide To Genealogical DNA Testing


  About Public Databases

Y-DNA Databases. DNA Heritage sponsors a public Y-DNA database at Likewise, Family Tree DNA sponsors a public Y-DNA database at You can choose to submit your results to these and other public databases after taking your DNA test.

Y-STR Databases. There are many Y-STR haplotype databases currently being developed globally, including ones at the University of Oxford, University of Arizona, Brigham Young University, University College London, University of Leicester, Family Tree DNA, and GeneTree Inc. The problem for researchers is that these databases are not available for public access. However, YHRD, the Y Chromosome Haplotype Reference Database (aka the Y-STR Haplotype Reference Database) is maintained by the forensic/research community. It allows you to search geographically and ethnically defined metapopulations

The SMGF (Sorenson Molecular Genealogy Foundation) Database is a free searchable Y-STR database. You may submit your DNA for free along with a paper pedigree, but they will not tell you your results. You will simply be added to the database.

Reliagene allows you to search their Haplotype Reference Database for U.S. Populations for matches within certain ethnic groups.

Sample Size.   Just to get perspective on the databases mentioned above, here is a statistical comparison, updated regularly:

As of 26 April 2004:
Ysearch32805193run by Family Tree DNA
Ybase21053322run by DNA Heritage
SMGF67364861run by the owner of Relative Genetics & GeneTree
Y-STR3423n/a22,872 minimal haplotypes [requires less markers]
Reliagene3406n/aonly U.S. populations

Please note: these numbers use the "extended" haplotype instead of the "minimal" haplotype unless otherwise noted.

NCBI. The National Center of Biotechnology Information (NCBI) maintains a list of molecular databases, including nucleotide databases, protein databases, structure databases, taxonomy databases, genome databases, and expression databases. NCBI's Entrez (the "Life Sciences Search Engine") offers cross-database searches including dbSNP.

NCI. The National Cancer Institute's Cancer Genome Anatomy Project (NCI's CGAP) offers various databases and cancer research information. In particular, the the SNP500Cancer database provides sequence and genotype assay information for SNPs useful in mapping complex diseases such as cancer.

Additional Information. To learn more, please select from one of the following links:


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