Don't understand SNPs, haplogroups, markers discussed below?
Unless you understand these, much of the page will not make sense!
SEE THE DNA EXPLANATION ITEM IN THE MENU ON THE LEFT
Subcategories of haplogroup G are primarily
based on special SNP testing.
SNPs are mutations passed on to descendants and are usually permanent changes. The SNPs are
referred to by the designation of a site on the Y-DNA chromosome, such as M201 and P15. The +
sign indicates the SNP mutation is present. All G persons will have the first and oldest SNP mutation that
occurred at M201.
Discovery of new SNPs is an ongoing process. New discoveries within haplogroups
have required reassignment of designations, and it may be possible 10 years from now that none
of the G subgroups below will have the same designation. The results of testing for the individual SNPs
will remain the same, but they could have different classification in the future. Major reclassifications
took place in 2007-09 and 2012.
The SNP mutations that occurred more recently than the general G mutation (M201+) are shown below
the first entry on the tree.
A person who belongs to one branch, such as G1, will not belong to another branch, such as G2.
As an example, a person who is in subgroup G1 will have the M285 mutation (M285+) but will
lack the SNP for G2 (P287+).
In addition, this G1 (M285+) person may or may not belong to a subgroup of G1.
This G genetic tree contains new SNPs not yet added to the trees of the commercial labs
as well as additional subgroups based on shared marker value oddities
We have found it most useful to provide here a link to the new Composite G Tree
https://sites.google.com/site/compositeytree/g with over 250 G branches.
The mutations listed with black lettering there are fully verified as G trees and on he official G tree at ISOGG
that is used by researchers. Those in blue lettering seem to be at the position on the tree shown, but
further testing is needed.
This site maintained by Ray Banks DNAgrouper2@gmail.com