This is the home page for the men predicted or confirmed Z725 and negative for
Z725 subgroups.   Z725 was identified in 1000 Genomes Project samples in
2011 by Ray Banks and turned into an individual test by Family Tree DNA in


The above diagram shows Z725's position in the G tree.  It is the youngest of a
series of mutations, each one covering fewer persons as the tree branched.
All Z725 men have all the mutations shown above it in the tree.

A separate page exists for each of these mutations and the persons covered by them.
See tabs on left.   The G-L497, G-L140, G-P287 and G-M201 pages have significant 
additional information.  

Z725 has a sister subgroup under CTS9737, characterized by men who have the
S10458 SNP.

Z725 has 2 subgroups of its own defined by SNP mutations, Z3158 & Z6748.
We have included on this page three subgroups defined by shared marker value
oddities.  When men from the subgroups have whole Y-DNA testing, this will
identify more reliable SNP mutations to define the subgroups.  Then they will
be moved to their own pages.  Currently one of these subgroups has
undetermined status for the Z726 subgroup, and this is being remedied.  It
is possible one or more will be moved down the G tree if results indicate this.
The two subgroups areDYS388=12 and DYS531=10.
Of these,DYS531=10 subgroup is confirmed negative for Z726.

Age of Z725

With only a few samples currently confirmed as Z725+ and negative
for the subgroups, it is difficult to draw conclusions.  Hopefully whole
Y-DNA sequencing currently underway within Z725 will provide some of
the answers.   Comparing 67-marker samples of all Z725 men suggests Z725
is at least 5,000 yrs old and (using the info in the G-L497 page) less than
12,000 yrs old.

The DYS388=12 subgroup seems to have such an ancestor who lived within 
the last 500 yrs.   The DYS531=10 group seems to have such an ancestor
who lived a bit over 2,000 years ago.  The defining mutation may have existed 
earlier than the most recent common ancestor for each of these subgroups.

Geographical Distribution of Z725

Nothing can be concluded presently about the geographical men coverage
of men who are Z725+ but negative for its subgroups because of the small
number.  Thew few available list German and British Isles ancestry.

The DYS388=13 subgroup is 100% English., and the DYS531=10 subgroup
is so far all from the British Isles, but one man of unknown origin has a 
Germanic surname. 

Origins of Z725

Until more samples are available, little can be said about the origins
of this subgroup.

Z725-related Maps

A project map exists for men in the Z725 category showing origins.

Source information

Because this mutation is so new, it has not been the subject of any studies.

Special Testing

The following men in the Z725 category have the following results
for newer, poorly defined SNP mutations: 
 [men without Z726- and L43- results may belong to one of those two subgrps]
                   items in red are the Z725 subgrps   + means positive, - means negative               

L42- Bailey, Chayer
L43- Chayer, Schwartz (in Geno file), Shepherd
L78- Beckner, Desmond
L79- Harbowy
L89- Desmond
L90- Desmond
L116+ Harbowy
L139-  Beckner
L142+ Harbowy
L149+ Beckner
L154+ Desmond
L156+ Desmond
L353+ Al Wazzan
L486- Hamman
L496+ Hamman
L640- Beckner
Z724- Beckner
Z726- Bailey, Chayer, Schwartz (in Geno file)
Z1901- King

The following DYS531=10 men have the following results
for newer, poorly defined SNP mutations: 
                   items in red are the Z725 subgrps   + means positive, - means negative  

Z726- Hammond
L43- O'Neal  

         more info about these SNPs can be found at:
                   type L1325, for example, in the Landmark box.  After searching, look
                               for the small L1325 in the colored area and click on it.