[Windom Earle]

Re the dry areas, there's always a workaround:

http://www.smh.com.au/national/vegemite-...iutpp.html

[T and A Man]

Why would you try PNG, they're Melanesian.

Torres strait islanders are Melanesian, aboriginals are distantly related to Indians from the sub continent.

That's the reason there is a distinction between the two indigenous groups.

[Rutting Elephant]

They are still closely related.

Quote:

They found, for example, that aboriginal Australians, Papua New Guinea highlanders and the Mamanwa people from the Philippines were genetically closest to each other and diverged about 36,000 years ago. This fit well with earlier genetic studies.
But the team was surprised to find — using four separate statistical methods — that a much more recent genetic mixing with people from India had occurred. They estimated that about 11% of the DNA of aboriginal Australians is derived from this event.

http://articles.latimes.com/2013/jan/14/...n-20130115

Not that the technical stuff even matters, just do the eye test and see how similar they look.