Y-STR Haplotype Databases
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Regional Y-STR Haplotype Databases

There are many regional Y-STR haplotype databases currently being developed globally.  The ones known are those at the University of Oxford, University of Arizona, Brigham Young University, University College London, University of Leicester, Family Tree DNA (Ysearch), Relative Genetics and YHRD.  The problem for researchers is simply most of these databases are not available for public access.

YHRD

The Institute of Legal Medicine, Charité - University Medicine Berlin, provides the web site and update for one of the best international YSTR databases.  It is called the Y-STR Haplotype Reference Database (YHRD). 

As a result of the 4th International Y-User Workshop “Haploid DNA Markers in Forensic Genetics” held in Berlin November 18-20, 2004, release 15 of the YHRDatabase was made available on December 20, 2004. The YHRDatabase now consists of 28.650 haplotypes in a worldwide set of 249 populations. 

The core set of loci referred to in the Y-STR haplotype database includes the following markers all of which were evaluated for years in forensic practice and fulfill the ISFG requirements for Y-STR polymorphisms used for casework analyses are:  

DYS19-DYS389I-DYS389II-DYS390-DYS391-DYS392-DYS393-DYS385a, b 
 
The above loci define the minimal haplotype of which is obligatory for any laboratory participating in the YHRDatabase project.
 

By clicking on YHRDatabase one can type in values for up to 10 Y-markers.  Then select the geography desired (North America, Europe, etc) and determine the frequency of your alleles in any population currently defined in the database.

 

Ysearch

Family Tree DNA, of Houston, Texas provides their “Ysearch” web site which allows people that have been Y-tested by other companies to make their database of haplotypes available for comparison. They have added several tools that allow you to compare side-by-side different users - the YsearchCompare - as well as generate a Genetic Distance™ Report, and many other features, including the upload of GEDCOM files.  The Ysearch web site can be accessed by clicking on   Ysearch.

 

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