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As shown in an interbreeding model produced by Neves and Serva (2012), the Neanderthal admixture in modern humans may have been caused by a very low rate of interbreeding between modern humans and Neanderthals, with the exchange of one pair of individuals between the two populations in about every 77 generations. [42]
The Neanderthal DNA found in modern human genomes has long raised questions about ancient interbreeding. New studies offer a timeline of when that occurred and when ancient humans left Africa.
Neanderthals became extinct around 40,000 years ago. Hypotheses on the causes of the extinction include violence, transmission of diseases from modern humans which Neanderthals had no immunity to, competitive replacement, extinction by interbreeding with early modern human populations, natural catastrophes, climate change and inbreeding depression.
The total population of Neanderthals remained low, and interbreeding with modern humans tended toward a loss of Neanderthal genes over time. [19] They lacked effective long-distance networks. Despite this, there is evidence of regional cultures and regular communication between communities, [20] [21] possibly moving between caves seasonally. [22]
Scientists have known since the first Neanderthal genome was sequenced in 2010 that early humans interbred with Neanderthals, a bombshell revelation that bequeathed a genetic legacy still ...
Two new studies have helped narrow down the time during which Neanderthals interbred with modern humans to a period starting about 50,500 years ago and lasting over seven millennia.. One of the ...
While interbreeding is the most parsimonious interpretation of these genetic findings, the 2010 research of five present-day humans from different parts of the world does not rule out an alternative scenario, in which the source population of several non-African modern humans was more closely related than other Africans to Neanderthals because ...
The study found that humans left Africa, encountered and interbred with Neanderthals in three waves: One about 200,000 to 250,000 years ago, not long after the very first Homo sapiens fossils ...