Has anyone ever studied the question of how long the native Australians were genetically isolated from the rest of the world, or if they ever even were genetically isolated? I'm just wondering how much genetic distance separated the Europeans from the Aboriginals when they finally met a few hundred years ago. Ok, I fear to ask this question because of sounding racist, so I'll say up front: I'm a chimp and happy about it, and happy to be a part of the whole web of life on Earth. I love everyone (or hate everyone, depending on whether I've been flamed recently) equally. Well, maybe a bit more love for myself than for anyone else. Not. A. Racist. So I heard that humans had reached Australia by about 50k years ago, but then "anatomically modern" Cro-Magnons date back only 40k years. What I'm wondering is how it's possible for Europeans to have children with Australian natives, when I'm pretty sure that wolves can't have pups with domestic dogs, and their genetic separation is only a couple of thousand years (I think?). Please don't slam me. I'm naive, but not a racist. Their ways might even be better than mine; maybe they don't run around asking dumb questions and worrying about being yelled at.