This page uses a new, tentative subgroup
classification of haplogroup G that is not yet being used by the commercial
labs. For details, link to the clade
page on this site.
April
2008 -- the new
Y-Chromosome Consortium G chart is published in Genome
Research
with no changes from October 2007 version
March
2008 -- The first detailed
DNA sample from a G2a3 [earlier just G2] population in the
Caucasus region becomes available. This sample proves to be
the
closest genetic cousin to most of the G persons of northern
Europe
and helps set the date for migration to
Europe.
January 2008 -- A study of
Greece by R. J. King and co-researchers lists a new SNP mutation
(M406) found in
G men there and also among men from
an earlier Turkish study.
October 2007 --
Pre-release circulation of new chart from Y-Chromosome Consortium
shows
a newly identified SNP mutation (P287) that causes the reclassification of
many
haplogroup G categories as new subgroups with new names.
Michael
Hammer of Univ. of Arizona also announces a new G1b subcategory
(P76)
September 2007-- Ted Kandell begins G2c [then termed
G5] project at Family Tree
DNA.
--
Ray Banks releases updated clade page, with listings for new
clades
and info on some useful slow markers that subdivide
some clades.
August 2007 -- First
detailed DNA sample available from the dominant G group
in the
Caucasus
region, which is also found to be G2a1a (P18+).
July
2007 -- Thomas Krahn of
Family Tree DNA Lab reports that
the
SNP markers for G1a, G2a1 [then termed G2a], and G2a1a
[then termed
G2a1] are subject to gene conversions
and testing is not reliable in all
cases.
-- Haplogroup
G Project exceeds 900 members.
early
2007 -- new Whit Athey
calculator available that allows also
prediction
of G2c [then
termed G5] haplogroup in addition to G2a
November 2006 -- University of Central
Florida researchers Jack Ballantyne and Lynn
M.
Symms, together with Gonzaga Univ. scientist Dennis
Garvey
identify new subcategories of G2a pertinent to most persons in
Europe.
They also determine
that a large group of mostly Ashkenazi
Jews
belong to
haplogroup G2c [then termed G5].
summer 2006 -- M. Regueiro and
others publish a study showing a high
concentration
(but not majority) of G1 in Iran.
summer 2006 -- Peter Christy
begins Haplogroup G project at Family Tree DNA
early
2006 -- Ted
Kandell launches G2c [then
termed G5] forum at Yahoo.com.
early
2006 -- Sanghamitra Sengupta and
others publish a study that identifies G2c
[then
termed G5]
individuals for the first time. The G2c men were residents of
Pakistan
early 2006 --
Ray Banks initiates this web site with listings of
country-by-country percentages of G in the Old World and identification of abt. 20 clades within G.
January 2006 -- Ray Banks
initiates a forum at Rootsweb for Haplogroup G topics
late
2005 -- testing
of some new subcategories of G other than G2a [then termed
G2]
become available
to the public
abt
2005 -- Whit Athey
makes available a calculator for predicting
haplogroup G2a [and
other haplogroups] based on marker
values
2005
-- Carl-Johan Swardenheim launches short-lived G discussion forum
abt.
2004 --
testing for haplogroup G and G2a become available to the public
2004
-- Cengiz Cinnioglu and others publish a study that identifies for
the
first time the G1, G2a1 [then termed G2a] and G2a2 [then termed
G2b]
subcategories -- all among Turkish
men.
2003-2004 -- Ivan Nasidze
and others publish two studies showing in the
data
an extremly high percentage of haplogroup G in N. Ossetia,
Russia,
and significant percentages south of the
Caucasus.
2003 -- Gianna Zei and others publish a study that shows unusual
concentration
of haplogroup G in northern Sardinia. [But later found to be
similar
to haplogroup G throughout the
island, including the earliest settled
areas]
2002
-- The new Y-Chromosome Consortium establishes
nomenclature for
haplogroups based primarily on letters of the
alphabet.
2002?
-- Michael Hammer of the Univ. of Arizona (and others?) identify the G
and G2a SNP
mutations.