How Genetics is settling the Aryan Migration Debate

View previous topic View next topic Go down

How Genetics is settling the Aryan Migration Debate

Post by Rashmun on Fri Jun 16, 2017 11:02 pm

The thorniest, most fought-over question in Indian history is slowly but surely getting answered: did Indo-European language speakers, who called themselves Aryans, stream into India sometime around 2,000 BC – 1,500 BC when the Indus Valley civilisation came to an end, bringing with them Sanskrit and a distinctive set of cultural practices? Genetic research based on an avalanche of new DNA evidence is making scientists around the world converge on an unambiguous answer: yes, they did.

This may come as a surprise to many — and a shock to some — because the dominant narrative in recent years has been that genetics research had thoroughly disproved the Aryan migration theory. This interpretation was always a bit of a stretch as anyone who read the nuanced scientific papers in the original knew. But now it has broken apart altogether under a flood of new data on Y-chromosomes (or chromosomes that are transmitted through the male parental line, from father to son).

Until recently, only data on mtDNA (or matrilineal DNA, transmitted only from mother to daughter) were available and that seemed to suggest there was little external infusion into the Indian gene pool over the last 12,500 years or so. New Y-DNA data has turned that conclusion upside down, with strong evidence of external infusion of genes into the Indian male lineage during the period in question.

The reason for the difference in mtDNA and Y-DNA data is obvious in hindsight: there was strong sex bias in Bronze Age migrations. In other words, those who migrated were predominantly male and, therefore, those gene flows do not really show up in the mtDNA data. On the other hand, they do show up in the Y-DNA data: specifically, about 17.5% of Indian male lineage has been found to belong to haplogroup R1a (haplogroups identify a single line of descent), which is today spread across Central Asia, Europe and South Asia. Pontic-Caspian Steppe is seen as the region from where R1a spread both west and east, splitting into different sub-branches along the way.

http://www.thehindu.com/sci-tech/science/how-genetics-is-settling-the-aryan-migration-debate/article19090301.ece

Rashmun

Posts : 3634
Join date : 2011-08-18

View user profile

Back to top Go down

Re: How Genetics is settling the Aryan Migration Debate

Post by silvermani on Sat Jun 17, 2017 12:44 am

Do the $99 DNA tests sold in the US also do only mtDNA tests?
avatar
silvermani

Posts : 949
Join date : 2014-01-18

View user profile

Back to top Go down

Re: How Genetics is settling the Aryan Migration Debate

Post by Seva Lamberdar on Sat Jun 17, 2017 8:45 am

These researchers should get out of their narrow thinking that genetic similarity can only be inherited, because similarity in genetic markers of people in India and those outside could also be the result of long term similar environmental effects on people in deifferent places (e.g. similarity in climates, living styles and conditions, nature of work, etc.,... ) --
http://such.forumotion.com/t19332-genetic-testing-issues-in-the-study-of-ancient-population-migrations-in-india-includes-info-about-the-out-of-africa-theory

Seva Lamberdar

Posts : 4636
Join date : 2012-11-29

View user profile https://docs.google.com/document/d/1bYp0igbxHcmg1G1J-qw0VUBSn7Fu

Back to top Go down

Re: How Genetics is settling the Aryan Migration Debate

Post by Vakavaka Pakapaka on Sat Jun 17, 2017 11:09 am

Seva Lamberdar wrote:These researchers should get out of their narrow thinking that genetic similarity can only be inherited, because similarity in genetic markers of people in India and those outside could also be the result of long term similar environmental effects on people in deifferent places (e.g. similarity in climates, living styles and conditions, nature of work, etc.,... ) --
http://such.forumotion.com/t19332-genetic-testing-issues-in-the-study-of-ancient-population-migrations-in-india-includes-info-about-the-out-of-africa-theory
Scientific investigation even in fundamental physics is fraught with uncertainties and controversies. It is hard to come with conclusions without bias and most don't stand scrutiny and the test of time. 

Biological science is mostly flooded with very low quality research and a lot of improperly done garbage.

The field of genetics is changing rapidly with the invent of newer experimental techniques and old theories are falling apart and new ones should be viewed as tentative until tried and tested through falsification. There is a lot of wishful thinking among investigators and the average "scientist" is more interested in finding evidence FOR his/her ideas rather than to question and put them to rigorous testing. This approach is in many ways, as Bacon puts it, pseudoscientific and is detrimental to understanding nature.

Many scientific ideas that prevail in literature are those of the noise makers who have a large number of "I scratch your back if you scratch mine" type colleagues.

Coming to the Aryan infiltration into India, it is a valuable story only to those who have a vested interest - like DKheads who want to convince themselves that they are the original Indians and political Dalits and their supporters like Kanch Ilaiah who have their own agenda.

A strong case can be made that Aryans (the term is not really race related; people of all hues were respected in ancient India; perhaps more so than in the modern Sikular era) moved West from India and spread their culture. These days, if anyone suggests this, Sikular junkies will jump at you and DKheads will start crying.........

Vakavaka Pakapaka

Posts : 6649
Join date : 2012-08-24

View user profile

Back to top Go down

Re: How Genetics is settling the Aryan Migration Debate

Post by Seva Lamberdar on Sat Jun 17, 2017 1:41 pm

Vakavaka Pakapaka wrote:
Seva Lamberdar wrote:These researchers should get out of their narrow thinking that genetic similarity can only be inherited, because similarity in genetic markers of people in India and those outside could also be the result of long term similar environmental effects on people in deifferent places (e.g. similarity in climates, living styles and conditions, nature of work, etc.,... ) --
http://such.forumotion.com/t19332-genetic-testing-issues-in-the-study-of-ancient-population-migrations-in-india-includes-info-about-the-out-of-africa-theory
Scientific investigation even in fundamental physics is fraught with uncertainties and controversies. It is hard to come with conclusions without bias and most don't stand scrutiny and the test of time. 

Biological science is mostly flooded with very low quality research and a lot of improperly done garbage.

The field of genetics is changing rapidly with the invent of newer experimental techniques and old theories are falling apart and new ones should be viewed as tentative until tried and tested through falsification. There is a lot of wishful thinking among investigators and the average "scientist" is more interested in finding evidence FOR his/her ideas rather than to question and put them to rigorous testing. This approach is in many ways, as Bacon puts it, pseudoscientific and is detrimental to understanding nature.

Many scientific ideas that prevail in literature are those of the noise makers who have a large number of "I scratch your back if you scratch mine" type colleagues.

Coming to the Aryan infiltration into India, it is a valuable story only to those who have a vested interest - like DKheads who want to convince themselves that they are the original Indians and political Dalits and their supporters like Kanch Ilaiah who have their own agenda.

A strong case can be made that Aryans (the term is not really race related; people of all hues were respected in ancient India; perhaps more so than in the modern Sikular era) moved West from India and spread their culture. These days, if anyone suggests this, Sikular junkies will jump at you and DKheads will start crying.........
Naturally, as the following explains,
  “About the origins of Vedas and Sanskrit (including Aryan Invasion Theory)”: 
http://creative.sulekha.com/about-the-origins-of-vedas-and-sanskrit-including-aryan-invasion-theory_591513_blog

Seva Lamberdar

Posts : 4636
Join date : 2012-11-29

View user profile https://docs.google.com/document/d/1bYp0igbxHcmg1G1J-qw0VUBSn7Fu

Back to top Go down

Re: How Genetics is settling the Aryan Migration Debate

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum