PSHG Haplotype and Genetic Distance

A new page is launched under our Results > Technical Data section – PSHG Haplotype Technical Data.

In the last post we talked about the Y-SNP Haplotree and how we organize clades by branching SNPs.  Today we return to the other method of analyzing Y-DNA, Y-STRs.  Refer to the following blog posts if you need a refresher on the concepts of Y-STRs and Genetic Distance: Mutating DNAPartner Profiles – FTDNA.

The International Society of Genetic Genealogists defines a Y-DNA Haplotype as, “the marker (allele) values obtained from a Y-STR (short tandem repeart) test.  The result for each marker is expressed as a number.”

Let’s look at the first few markers and values of the PSHG Modal Haplotype:

PSHG Haplotype Y7

  • DYS398, DYS390, DYS19, DYS391, DYS385a, DYS385b, and DYS426 across the top row represent the FTDNA names of the Y-STR markers.  Specifically this refers to the named location on the Y Chromosome where a short tandem repeat is identified.
  • The names above, in their order, can be referred to by marker number: 1 – 7 is shown below, but latest Y-STR tests analyze 111 markers.
  • The values of the test result are in the third row.  This number value represents the number of STRs which are found at that marker – your DNA signature.

Example: At Marker #1, named DYS393 by FTDNA, the PSHG Modal Haplotype has a value of 13.

Each person with Y-STR results has their own haplotype.  Patterns emerge when comparing groups of related Y-STR111 test results, even if those group members are related at 8th cousins!  While individual values may differ, if there are enough member test results, a Modal Haplotypes can be established.

Genetic Distance is a way to measure and compare how closely (or far) one haplotype is to another.  Our Haplotype Technical Data page shows a comparison of the PSHG Modal Haplotype compared to those at R1b-FGC13595 and further upstream at R1b-U106.

Visit the PSHG Haplotype Technical Data page to see this detail and to understand how the Genetic Distance compares to other upstream haplotypes.


  1. ISOGG Wiki definition of Haplotype,
  2. FTDNA Learning Center,

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