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out of Africa model

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Swan princess, John Bauer (1882-1918). Human head hair is of relatively recent origin, reaching incredible lengths in some groups but not in others. Credit: Wikimedia Commons
I've published an article on the evolution of long head hair in humans. The following is the abstract: In many humans, head hair can grow to a much greater length than hair elsewhere on the body. This is a "derived" form that evolved outside Africa and probably in northern Eurasia. The ancestral form, which is... Read More
Skull from Broken Hill (Kabwe), Zambia.  Credit: Wikimedia Commons
Archaic humans were still around when the Neanderthals were going extinct in Europe
East Africa, 60,000 to 80,000 years ago. The relative stasis of early humans was being shaken by a series of population expansions. The last one went global, spreading out of Africa, into Eurasia and, eventually, throughout the whole world (Watson et al., 1997). Those humans became us. This expansion took place at the expense of... Read More
Remains of archaic hominins from southwest China (Curnoe et al, 2012). They were around when villages and towns were arising in the Middle East. Recent findings have confirmed the ‘Out of Africa’ model of human origins, but only in part. The model diverges from actual prehistory on two main points. One is that modern humans... Read More
Broken Hill (Kabwe) skull. In Africa, very archaic hominins persisted into recent times. Were archaic hominins still roaming over parts of Africa when farming villages began to form in the Middle East? I raised this question in my last post. But others are now raising it too: A new convert to this view is the... Read More
Broken Hill skull from Zambia, dated to 110,000 BP. It is often identified as a Homo sapiens, largely because it is so recent. We now have evidence that very archaic hominins inhabited central and southern Africa at least 35,000 years ago. The past year has brought us a new model of human evolution. It’s a... Read More
Andaman Islanders. Related peoples once inhabited the coastal regions of southern, southeastern, and eastern Asia. The past year brought two major advances: the long awaited sequencing of the Neanderthal genome and the genetic sequencing of an another archaic human, the Denisovans of East Asia, whose existence had previously been unsuspected. The bottom line comes down... Read More
With the onset of the glacial maximum c. 20,000 years ago, and the ponding up of the Ob River, humans circulated less easily from one end of the steppe-tundra belt to the other. This barrier separated ancestral Europeans from ancestral East Asians. Outside Africa, people seem to have the same amount of Neanderthal admixture, be... Read More
Expansion of modern humans out of Africa and within Africa. Mellars (2006). When we discuss the origins of modern humans, the term ‘Out of Africa’ is a bit misleading. Our common ancestors came not from Africa as a whole but from a relatively small area somewhere in East Africa. Beginning around 80,000 years ago, this... Read More
Skhul V – one of the Skhul-Qafzeh hominins. Were they the middleman between Neanderthal genes and the modern human genome? When I initially published my last post, I pooh-poohed the rumors about the reconstructed Neanderthal genome. How could modern humans have Neanderthal DNA when no such admixture appeared in previous analyses of mtDNA, dentition, and... Read More
Linda Vigilant – Was she in on the Big Secret? Was the rhino? The HBD blogosphere has been rife with speculation about the reconstruction of the Neanderthal genome. John Hawks, Razib Khan, and Steve Sailer felt that something big was in the offing. Above all, this something would resurrect the multiregional model of human origins.... Read More
Ségolène Royal and supporters A University of New Mexico research team has announced that the human gene pool seems to have admixture from an outside source, most likely from the Neanderthals and other archaic humans. This conclusion was based on analysis of variation in microsatellite DNA from European, Asian, and Oceanic populations. Since microsatellite DNA... Read More
How did archaic humans evolve into the different populations of Homo sapiens we see today? The answer has long divided anthropologists. Some opt for the ‘out-of-Africa’ model; others for the multiregional model. According to the out-of-Africa model, we all descend from a small group that existed some 100,000 to 80,000 years ago somewhere in eastern... Read More
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