G-L293

This is the home page for men who have the L293 subgroup but are negative for its SNP subgroup
or those just predicted L293+. Testing to determine membership in the L293 by those only
predicted is always welcome.  Testing is not necessary if a close relative was found to have L293
or man has the very distinctive marker values seen in the two L293 subgroup based on shared
marker value oddities.

L293 is a younger branch of men who have the Z6552 mutation and before it P15 mutation. There is a
tab for G-P15 on the left but has no significant information.  In contrast, the older mutation that
encompasses even more men, P287, has considerable info in the G-P287 tab.  And older yet is the
M201 mutation that encompasses all G men, and there is also much info in the G-M201 tab.  

L293 has two subgroups defined by having a permanent SNP mutation.  One is the FGC693
subgroup, and the other is the Z17774 subgroup.

Almost all men within L293, including its subgroups, have 10 at the DYS392 marker.  This is
not seen often outside of L293.  The men in the two subgroups based on marker oddities have 
11 at marker DYS505 which helps to distinguish them from the FGC693 subgroup. But the
defining marker values of one subgroup show a rare value of less than 18 for marker DYS481.  
Whole Y-DNA sequencing will identify new SNPs which will be a more reliable replacement for these
marker values in defining the subgroup.

Age of L293

Whole Y-DNA sequencing will give us a much better idea of the age of L293.   The variation
within L293 men using 67-marker samples suggests this L293 group with its subgroups may be
only about 5000 or so years old.  But the early branches may have died out, and it likely would
take many more centuries to get back to the mother P15 group.

Within the DYS438=11 subgroup based on comparison of marker values, the common ancestor
seems to have lived 1,500 to 2,500 years ago.  But it is possible the subgroup existed earlier than 
that as family group and all the current members of the group are descended from a more recent
ancestor within the group. 

Geographical Dispersal of L293

The FGC693 subgroup is heavily concentrated in the central Caucasus Mountains area, north in
North Ossetia, and south in South Ossetia, also among the Svans and parts of northern Georgia.
It is expected there is some also in southern Georgia, but this is poorly defined at present.
Thee DYS438=11  subgroup so far only reports western European
origins  and predominantly Italian. 

In the YHRD database there is an unusual concentration of Swiss men whose marker values
are consistent with the L293 subgroup.  Many samples were gathered in Basel.

Origin of the Overall L292 Subgroup

Because of the overall age of the three L293 subgroups, there are almost an infinite number of
possibilities as to how they might has dispersed both during the pre-history and historical 
periods.    Unless some additional subgroups are identified, this may be a mystery that goes
unsolved.  But having a more reliable time estimation will reduce the possibilities.

Maps for the L293 Subgroup

This subgroup is too new for maps to have appeared in research studies.   The SNP subgroups
have their own maps.   
Look at top left of map and choose the L293 subgroup.  Just below this are the maps for the 
DYS438=11 subgroup.

Source information:

L293 has never been tested in a published study.  So no useful information is available.

Rootsi and others provided 4 samples from Corsica in 2012 that were P15+ and negative
for L91.  Four had double DYS19 values, clearly placing them in the L293+ status.

The YHRD database shows an unusual concentration of seemingly L293 men in Switzerland.

The following DY438=11 subgroup men have the following results
for newer, poorly defined SNP mutations: 
                                                                                                         + means positive, - means negative
L31+ Jacoy
L149+ Jacoy
L293+ Jacoy
U5+ Jacoy
 
          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.
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