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homosapien
05-27-2017, 03:20 PM
Hi,

I wanted to know if there is any more information out there about k1b1a.

From what I know from the available information (though the sampling is skewed) it looks like,

1) K1b was born somewhere in the vicinity of NearEast/West Asia.

2) Expanded into Europe during the farming revolution.

3) Was still found in fair frequency during the Early Bronze Age.

4) Then started becoming much rarer, which persists to this day.

My guess is K1b harbored some mutations which were not conducive for growth.

Are you aware of any studies regarding auto-immune disorders linked specifically to K1b groups?

Thanks,

homosapien
05-28-2017, 09:40 PM
Replies are equally rare as the haplogroup.

J1 DYS388=13
05-29-2017, 08:10 AM
The Costa paper on Ashkenazi DNA says K1b, K1b1, and K1b1a are all of "likely European origin." The age of K1b1a in that paper is about 13,000 years. So those researchers don't support your assumptions 1 and 2.

For what it's worth, the available ancient DNA samples suggest that the daughter branch K1b1a1 was more successful than the parent. http://www.ancestraljourneys.org/europeanneolithicdna.shtml

I don't know anything about diseases connected with K1b.

homosapien
04-26-2018, 02:33 AM
Just wanted to update this thread with some new samples of K1b1a. These samples are found in this new pre-print paper "The Genomic Formation of South and Central Asia"

https://www.biorxiv.org/content/early/2018/03/31/292581

1) I2328 I2328 6013-5898 calBCE (707530 BP, PSUAMS-2345) Hajji_Firuz_C - K1b1a

This first sample is the oldest I know of for K1b1a and which has been found in North Western Iran.

2) S7718.E1.L1 I7718 403-360 calBCE (229619 BP, CIRCE DSH-5624) Saidu_Sharif_IA - K1b1a1+199

This second sample is the most proximal and oldest specimen for South Asia found in Swat Valley in present day Pakistan.

So K1b1a was found with fair frequency till the Iron Age it seems, the rarity or total absence of the same is seen in modern day South Asian mtDNA studies, where I have not come across any till date.

marciadietrich
09-09-2018, 12:40 AM
Hello homosapien.

Per 23andme I am haplogroup K1b1a (K1b1a1 is what they said on my son's at 23andme with the newer version). I often get trace to up to 5% or so West Asian/Turkish/Iranian readings - though none on 23andme except a point one percent non specific East Asian/Native American --- they did say somewhere my maternal line has "ancient ties" to West Asia/Iran.

If I run myself through the GEDMatch on some of those, where there are more limited choices on where to place my DNA, they might call me higher on Caucaus related ethnicity up to 20% not possible.

I had thought my mother's side a probably 2nd great grandmother was supposed to be Native American "Indian" was the word we used back then, but appears perhaps she was maybe Turkish/Iranian/Pakistani? .. Armenian? I don't know as everyone recorded simply shows as "white" on the old census reports and all we had was a photo taken in the 1800's (I hope that my sister has now).

Perhaps the haplogroup is rare now in India/Asia but per 23andme mine was 1 in 1100 on version 4 and now with their version 5 on my son's it shows as 'fairly common' 1 in 910 of 23andme users having the haplogroup. They show Otzi the Iceman as being the famous find/person for the haplogroup K.

Basically, the K1b1a line appears to have migrated out into Europe and probably most of that in the K1b1a1 subset like I have.

Best to you.
Marcia