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http://www.enter.net/~torve/trogholm/wonder/indoeuropean/indoeuropea
n1.html>
Quotes:
"DNA studies make it clear that there was a substantial population
influx from Central Asia into India at some point, and the most
likely moment for that to have happened was near the end of the Ice
Age. During and just after the Last Glacial Maximum, northwestern
India was in the grip of desert and semi-desert conditions. Then,
about 15,000-13,000 BP, the monsoons returned to their more normal
pattern, bringing with them a renewal of moisture and abundance. At
this time, the area could easily have been repopulated
simultaneously from the west and from the east, producing a mixed
population and a distinctive Indic culture. "
"In the final leg of the journey, the speakers of proto-Indic would
have left the Amu Darya to press on through the foothills of the
Hindu Kush and into the valley of the great Indus River -- probably
no later than 13,000 BP. When agriculture reached India from the
northwest about 10,000 BP, it would not have represented the arrival
of a new people but merely the result of cultural transmission among
close relatives."
End quote
The author calls for a migration into Sindhu Sarasvati region 15,000
ago based on genetic evidence. They are not specific about what
genetic markers are being used. If it is the M17 then, that went out
of India into Central Asia according to Oppenheimer.
M. Kelkar