What DNA Says About Aryan Invasion Theory -2

[G.Subramaniam]

[quote name='Nag' date='10 June 2012 - 07:10 AM' timestamp='1339291958' post='115073']

Dhu ji,





Is it possible for you to kindly further explain how does one fix the direction of mutation? for a lay man who has very elementary genetic knowledge, seems like mutation took place in Europe because of the need to adjust to cooler climates, given the peopling happened from Africa to South Asia earlier so one can say that from Sumbrahmanmiam ji's posts above the G->A might have taken place due to a necessity to adjust to a new place, so this might have happened in higher latitude as compared to the Indian subcontinent? am I correct in understanding?



Subrahmanmiam ji:



So threonine allele's presence is because of G->A mutation? wiki only mentions threonine. Are there any references which I refer to about this gradient?

Thanks again.

[/quote]





So threonine allele's presence is because of G->A mutation? = Yes



What my post says is that among Tamils, the A version of SLC24A5 emerged to the extent of 30%

And as you went to northern latitudes, such as Sinhalese ( Oriya migrants ), it went to 50%



The lightest quintile of Indians ( Punjabis, brahmins, kashmiris, upper castes etc )

had A / G ratio of 90% / 10%



The darkerst quintile of Indians ( dravidian speakers, tamils, telegus, etc )

had A / G ratio of 50% / 50%



Among white europeans, A / G ratio is 99.9% / 0.1%



So you can see the start of the mutation in south India, slowly getting selected more in north India and reaching fixation in whites



This mutation started 10k years ago in India



'Could it be changes in diet? Could it be wearing clothes? Could it be infection? I really don’t know.' excerpt from my post



My guess is it started with wearing clothes, a lot of the body even in south India got removed from sun-light, and the skin exposed to sun had to lighten to get in more Vit-D