Razão pela qual não se achou ainda o primata ancestral dos humanos: hibridismo

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Denny inherited one set of chromosomes from her Neanderthal ancestors, depicted in this model.Credit: Christopher Rynn/University of Dundee

Denny inherited one set of chromosomes from her Neanderthal ancestors, depicted in this model.Credit: Christopher Rynn/University of Dundee

Cruzamentos férteis entre diferentes especies: Neanderthals e Denisovans

Observe que já se sabia que o homo sapiens tenha vindo de uma linhagem de Neanderthals:  Before the discovery of the Neanderthal–Denisovan individual, whom the team has affectionately named Denny, the best evidence for so close an association was found in the DNA of a Homo sapiens specimen who had a Neanderthal ancestor within the previous 4–6 generations3.

Artigo na Nature:

Mum’s a Neanderthal, Dad’s a Denisovan: First discovery of an ancient-human hybrid

22 AUGUST 2018

https://www.nature.com/articles/d41586-018-06004-0

Paper Original:

The genome of the offspring of a Neanderthal mother and a Denisovan father

https://www.nature.com/articles/s41586-018-0455-x

Abstract

Neanderthals and Denisovans are extinct groups of hominins that separated from each other more than 390,000 years ago1,2. Here we present the genome of ‘Denisova 11’, a bone fragment from Denisova Cave (Russia)3 and show that it comes from an individual who had a Neanderthal mother and a Denisovan father. The father, whose genome bears traces of Neanderthal ancestry, came from a population related to a later Denisovan found in the cave4,5,6. The mother came from a population more closely related to Neanderthals who lived later in Europe2,7 than to an earlier Neanderthal found in Denisova Cave8, suggesting that migrations of Neanderthals between eastern and western Eurasia occurred sometime after 120,000 years ago. The finding of a first-generation Neanderthal–Denisovan offspring among the small number of archaic specimens sequenced to date suggests that mixing between Late Pleistocene hominin groups was common when they met.

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