High R2 (M124) frequencies in Bangladesh

[R2_M124]

I tested R2 (M124) positive a few months ago, since then I did research about my ancestry & found out that its most commonly found in Bangladesh & India

2 DNA studies both showing that R2 (M124) is a common Y-DNA in Bangladesh although not as common as R1a, whats important about this is that R2 (M124) unlike R1a is found in much lower frequencies elsewhere in the world, making it a marker associated strongly with Bangladesh

The first DNA study:
Haplotype diversity of 17 Y-chromosomal STR loci in the Bangladeshi population
was published on Public Medical journal
Haplotype diversity of 17 Y-chromosomal STR loci i... [Forensic Sci Int Genet. 2010] - PubMed result

15% of Bengali are R2 (M124)
__________________________________________________ ____________________

The Second DNA study:
Genotyping Bengali males from Bangladesh & the West Bengal
was published on The Genetic Atlas
Genotyping Bengali Males - Abhik et al. 2010

12% of Dahaka Bengali are R2 (M124)
14% of Kolkata Bengali are R2 (M124)
40% of Gaibunda Bengali are R2 (M124)
08% of Sylhet Bengali are R2 (M124)


I was wondering if anybody knows the history of Gaibunda?

[Habib]

Fascinating thread. But you should have posted it in 'Forget Cricket' section rather than 'Get Together' section.
Welcome to BC BTW.

[Neel Here]

interesting topic. could we have some more data from the papers, in stead of a single datapoint or two ?
thanks.

[Zeeshan]

Hi. Welcome to the forum. Mind making the research findings accessible to the layperson please?

[Beamer]

Gaibandha area traditionally had a lot of Adibashi ( Santal ) population. Something to ponder maybe?

[Rabz]

Yeah, in plain simple english please...

[bujhee kom]

R2D2 was a Bengali too!

[Blah]

Maybe you have already seen the wikipedia entry and checked out its references. I don't know the history of gaibanda, or should it matter, if you are looking for the source of the migration.

More specifically you might be interested in these:

• Haplogroup R, the ancestral clade to R1 and R2, appeared on the Central Asian Steppes around 35,000 to 30,000 years ago.
  
• R1, sister clade to R2, moved to the West from the Central Asian Steppes around 35,000 to 30,000 years ago. R1 pockets were established, from where R1a and R1b emerged.
  
• R2 made its first entry into the Indian sub-continent around 25,000 years ago. The routes taken are not clear, although the Indus and Ganges rivers are possible theories put forward. There could, of course, have been multiple immigrations of this haplogroup into the Indian sub-continent, both in the Paleolithic and the Neolithic.

I doubt many people here can help you with the history of gaibanda. It would be interesting to know if there is specifically anything you would want to know about the history of that region, as opposed to history of a small district, whose borders have changed quite a bit in the last 100 years and most likely migration of population.

The reference you linked to is under paywall and the abstract is not very helpful. It seems to reinforce what you already know about the diversity of R2 in that region.