Originally posted by Hopeforeveryone
Was just reading about how aboriginal Australians have Indian dna, suggesting interaction between these people 4000-5000 years ago.

Prof Stoneking said: "We have a pretty clear signal from looking at a large number of genetic markers from all across the genome that there was contact between India and Australia somewhere around 4,000 to 5,000 years ago."

BBC news

The study in no way implies Indians were in Australia 4000, years ago, what it does imply is that there was gene flow from India to southeast Asia to to Indonesia to new guinea and then to Australia. The timing falls in line with an austronesian expansion into melanesia, and then a melanesian expansion into Papua new guinea, then to northern Australia. This area of Australia is also where one finds languages not related to the main Australian language family. Indian genes could get to Australia another way, via dravidian traders from the indus valley, whom were know to trade with Indonesia. And dingo genetics clearly show an east Asian origin for the dingo, and it has no relation to ancient domestic dogs from India.