Not all modern humans originate from Africa

[goodsamaritan]

The "Out of Africa" theory proposes that modern humans evolved in Africa and then spread throughout the earth somewhere around 60,000 years ago, replacing earlier humans with little or no interbreeding.

The new specimen from China is basically a modern human, but it does have a few archaic characteristics, particularly in the teeth and hand bone. According to Trinkaus, this morphological pattern implies that a simple spread of modern humans from Africa is unlikely, especially since younger specimens have been found in Eastern Eurasia with similar feature patterns.

http://www.youtube.com/watch?v=yQgcqtBICAU

[TylerDurden]

well, I've always been sceptical of the Out of Africa theory as it had a number of quasi-Creationist notions. The multiregional hypothesis made far more sense, in that it demonstrated that humans interbred with Neanderthals(and therefore most likely with other hominids) rather than an unrealistic notion that we simply wiped out all other hominids without breeding with them.

[kurite]

well, I've always been sceptical of the Out of Africa theory as it had a number of quasi-Creationist notions. The multiregional hypothesis made far more sense, in that it demonstrated that humans interbred with Neanderthals(and therefore most likely with other hominids) rather than an unrealistic notion that we simply wiped out all other hominids without breeding with them.

Why is it not possible that after we left Africa we bred with other hominids? Now that we re-created the neanderthal genome we know we share about 4% of their DNA.

[TylerDurden]

Why is it not possible that after we left Africa we bred with other hominids? Now that we re-created the neanderthal genome we know we share about 4% of their DNA.

The multiregional hypothesis is far more likely as it postulates that interbreeding between hominids occurred throughout prehistory, not just after some sort of  African exodus. Plus, there has been considerable stupidity in scientists trying to suggest that Neanderthals and all other hominids were all somehow stupider than homo sapiens, whereas current scientific data shows, overwhelmingly, that the Neanderthals were as intelligent as modern humans. The greater likelihood is that our apemen ancestors all interbred with each other, and produced humans all over the globe, not just in Africa.

[kurite]

The multiregional hypothesis is far more likely as it postulates that interbreeding between hominids occurred throughout prehistory, not just after some sort of  African exodus. Plus, there has been considerable stupidity in scientists trying to suggest that Neanderthals and all other hominids were all somehow stupider than homo sapiens, whereas current scientific data shows, overwhelmingly, that the Neanderthals were as intelligent as modern humans. The greater likelihood is that our apemen ancestors all interbred with each other, and produced humans all over the globe, not just in Africa.

But then how would all modern humans be so genetically similar? Isn't it a little unlikely that we all underwent evolution in the exact same way in multiple regions at once?

[TylerDurden]

But then how would all modern humans be so genetically similar? Isn't it a little unlikely that we all underwent evolution in the exact same way in multiple regions at once?

Not at all. If ancient apemen all regularly interbred with each other all over the globe over millions of years, then it would make perfect sense for modern humans to appear all over the globe, in a short space of time, and to be  similiar.

[RawZi]

But then how would all modern humans be so genetically similar? Isn't it a little unlikely that we all underwent evolution in the exact same way in multiple regions at once?

    Well our evolution I would think is basically the same, but our diets, especially if cooked would be very different.

    What do you eat?  Have you tried raw milk? 

    It's strange, everyone always says dark skinned people can't drink milk.  Most of the people I've met who were born in Africa tell me they drank milk from their own goats (or camels) without incident, or even healed things with milk there.  And then there's the Masai.  Sorry for babbling, but saying all people this or that, it doesn't work very well for me.  I know though that here in the US many ethnic people have too much trouble drinking milk to be worth trying.  Asia too, Mongols or some groups used lots of dairy, yet here in US cannot, and are known to be genetically unable to use dairy.  Maybe ethnic people fare better with dairy than Caucasian, and there's just too much disinformation?

    I know in my own family, aunt from uncle from parent from sibling etc fare differently with different foods.  I don't know if that could fit in with modern humans originating from different places, but I could wonder.  Maybe each just carries a different part of our past.

[pioneer]

The multiregional hypothesis is far more likely as it postulates that interbreeding between hominids occurred throughout prehistory, not just after some sort of  African exodus. Plus, there has been considerable stupidity in scientists trying to suggest that Neanderthals and all other hominids were all somehow stupider than homo sapiens, whereas current scientific data shows, overwhelmingly, that the Neanderthals were as intelligent as modern humans. The greater likelihood is that our apemen ancestors all interbred with each other, and produced humans all over the globe, not just in Africa.

The neanderthal man had the biggest brain.