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Artificial intelligence identifies an unknown species of human ancestor

Artificial intelligence identifies an unknown species of human ancestor

4011106

London: «Asharq Al-Awsat»

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Sun, 27 Nov 2022 15:15:13 +0000

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Artificial intelligence identifies an unknown species of human ancestor

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Artificial intelligence identifies an unknown species of human ancestor

Sunday – 4 Jumada Al-Awwal 1444 AH – November 27, 2022 AD

London: «Asharq Al-Awsat»

Nobody knows who she was, except that she was different; A teenage girl from over 50,000 years ago was oddly distinct, and looked like a hybrid ancestor of modern humans the likes of which scientists had never seen before. Only now, researchers have uncovered evidence that she wasn’t the only one. In a new study analyzing the complex chaos of prehistoric humans, scientists used artificial intelligence (AI) to identify an unknown species of human that modern humans found in Africa thousands of years ago.
“The so-called (outside of Africa) appeared about 80,000 years ago, when part of the population, originally made up of modern humans, abandoned the African continent and migrated to other continents, which led to the emergence of the current population,” explains evolutionary biologist Guam Bertranpetit of Pompeu Fabra University in Spain. This is according to what was published by the specialized scientific site “Science Elert”, quoting research published in the journal Nature Communications.
And just as modern humans shaped this path to the land of Eurasia, they shaped other things as well, such as interbreeding with other ancient and extinct species of hominins.
Until recently, these casual sexual partners were thought to include Neanderthals and Denisovans, the latter remaining unknown until 2010. But now, a third ancient human has been isolated from Eurasian DNA, thanks to deep learning algorithms that trawl through complex structures of the human genetic code. ancient and modern.
Using a statistical technique called Bayesian inference, the researchers found evidence for what they called the “third deviation.” The “ghost” of the ancient inhabitants who interbred with modern humans during the exodus from Africa.
“These populations are either related to the Neanderthal Denisovan lineage or diverged early from the Denisovan lineage,” the researchers wrote in their article. This means that this third human in the history of the human race is likely to be a mixture of Neanderthals and Denisovans.
The point, from a deep learning point of view, is that this is hypothetical proof of the class of teenage girl “fossil hybrid” identified last year. However, it is early days, and the research projects themselves are not directly related.
In this context, a member of the team, a geneticist Mayuk Mondal from the University of Tartu in Estonia, says, “Our theory agrees with the hybrid sample discovered in Denisova, although so far other possibilities cannot be ruled out.” However, discoveries in this area of ​​science come thick and fast.
Notably, last year another team of researchers identified evidence of what they called a “confirmed third mating event” alongside Denisovans and Neanderthals, and pursued the chronology of how these extinct species intersected and reproduced in more vivid detail than ever before.
The application of this kind of AI analysis is a new technique in the field of human ancestry, and the unknown fossil evidence we are dealing with is very sparse. But according to the research, what the team found doesn’t just explain the long process of introgression; But it gives information about who we are today.

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