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Correcting for a sample bias in the genetic databases of modern humans, the researchers sequenced DNA from five different individuals from different regions around the world: Southern Africa, West Africa, Papua New Guinea, China and France.
When the researchers compared the genomes of the five modern day humans to the Neanderthal, they found that the non-African genomes were more similar to Neanderthals than the African genomes.
Because these similarities are present in the genomes of the individuals from China, Papua New Guinea and France, this suggests that human and Neanderthal interbreeding took place when they shared a common ancestor - after the migration out of Africa.
Originally posted by OrphenFire
reply to post by pcrobotwolf
What are you implying with the post above? Please clarify. Are you saying that Australian Aborigines are Neanderthals?
Originally posted by Astyanax
Just leave it.
Nobody knows what colour early humans were, or what their facial features looked like, apart from those which are determined by bone structure.
This kind of speculation is racist by definition, whatever your own personal views and feelings.
Just leave it.
Originally posted by pcrobotwolf
reply to post by OrphenFire
when you look at the genomes of different humans, the ones with the Neanderthal DNA are the Europeans.Really would you like to provide proof of your claim. And also wouldn't that mean white people came before blacks seeing as how Neanderthals came first. I think you need to do some more research on the subject.
Originally posted by madnessinmysoul
This thread is entirely pointless without reference to actual scientific works.
Originally posted by Pimander
reply to post by madnessinmysoul
It's bollox mate, you're right... But still a tiny bit funny you've go to admit.
Originally posted by OrphenFire
I wasn't trying to be funny. I was postulating a theory that the interbreeding of Neanderthals and humans led to a drastic racial diversity.
Fact: humans today have some Neanderthal DNA.
Neanderthals are extinct, therefore the interbreeding of humans and Neanderthals positively took place.
Fact: Neanderthals hailed from Europe, and humans hailed from Africa.
(there is no "came first", they are entirely different species who evolved independently of one another from the split population of Homo heidelbergensis (cave men).
Africa is closer to equator and hotter. Europe is further up and cold. The exposure of a hot, unshielded sun led Homo sapiens to evolve dark skin and the cooler climate led Homo neanderthalensis to evolve lighter skin.
And I don't see how anyone can think I'm being racist. If you find racism in my remarks, you yourself are reading that into the discussion.
Implications for modern human origins. One model for modern human origins suggests that all present-day humans trace all their ancestry back to a small African population that expanded and replaced archaic forms of humans without admixture. Our analysis of the Neandertal genome may not be compatible with this view because Neandertals are on average closer to individuals in Eurasia than to individuals in Africa. Furthermore, individuals in Eurasia today carry regions in their genome that are closely related to those in Neandertals and distant from other present-day humans. The data suggest that between 1 and 4% of the genomes of people in Eurasia are derived from Neandertals. Thus, while the Neandertal genome presents a challenge to the simplest version of an “out-of-Africa” model for modern human origins, it continues to support the view that the vast majority of genetic variants that exist at appreciable frequencies outside Africa came from Africa with the spread of anatomically modern humans. A striking observation is that Neandertals are as closely related to a Chinese and Papuan individual as to a French individual, even though morphologically recognizable Neandertals exist only in the fossil record of Europe and western Asia. Thus, the gene flow between Neandertals and modern humans that we detect most likely occurred before the divergence of Europeans, East Asians, and Papuans. This may be explained by mixing of early modern humans ancestral to present-day non-Africans with Neandertals in the Middle East before their expansion into Eurasia. Such a scenario is compatible with the archaeological record, which shows that modern humans appeared in the Middle East before 100,000 years ago whereas the Neandertals existed in the same region after this time, probably until 50,000 years ago.