On the classification of T2

Posts: 77
Joined: Sat Dec 01, 2012 12:40 am

PostPosted: Thu Dec 13, 2012 9:19 am
I have done the FGS test with FamilyTree and was classified as T2 only, they did not find me any suitable subbranch.
My HVR1 and HVR2 mutations are 16126C, 16287T, 16294T, 16519C 73G, 214R, 263G, 309.1C, 315.1C
My brother was just tested with Geno 2.0 and was classified as T only. I was very surprised after the mtDNA changes yesterday FamilyTree to reclassify me as T as well.
After I examined the Human mtDNA Phylogeny tree, which was obviously used by FamilyTree, I discovered 16296T was a required mutation to be classified T2, while on the official PhyloTree, it is variable.
Now, I have the other mutations A11812G, A14233G required for T2 and don't understand the logic of dropping me from T2. I am not any rare exception of the rule, as there should be thousands of people tested positive for all other mutations for T2, but without the 16296T.
Isn't it logical to brand US T2, and all the others with 16296T like T2a, etc. Why are A11812G, A14233G left hanging? Also there are other old branches of T2 without the 16296T mutation and they are still classified as T2xx.
As we see in T_FGS project, subgroups like T2c, many of which don't have the 16296T are still classified as T2.

Posts: 7
Joined: Fri Mar 23, 2012 7:36 pm

PostPosted: Fri Feb 08, 2013 2:45 am
I am also absent the 16296T mutation, but I'm classified as T2g by 23andMe AND by Geno 2.0 FTDNA has me as a T but I have only done the HVR1 and HVR2 tests.

My T2g ancestor Francoise Arguin from Brittany, France in 1698. My mother's line was from Quebec.
Y-DNA R1b-DF23
MDKA: Mogue Kehoe, 1799, Kiltilly, Co. Wexford, Ireland

mtDNA: T2g
MDKA: Francoise Arguin, 1698, Camaret-Sur-Mer, Breatgne, France

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