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World News
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Title: Humans Interbred with Four Extinct Hominin Species, Research Finds
Source: [None]
URL Source: http://www.sci-news.com/otherscienc ... minin-introgression-07438.html
Published: Jul 30, 2019
Author: staff
Post Date: 2019-07-30 16:13:14 by Ada
Keywords: None
Views: 258
Comments: 16

As anatomically modern Homo sapiens migrated out of Africa and around the rest of the world, they met and interbred with at least four different hominin species, according to new research from the University of Adelaide, Australia. Strikingly, of these hominins, only Neanderthals and Denisovans are currently known; the others remain unnamed and have only been detected as traces of DNA surviving in different modern populations. Reconstruction of Homo floresiensis, an extinct hominin species that lived on the Indonesian island of Flores between 74,000 and 18,000 years ago. Image credit: Elisabeth Daynes.

Reconstruction of Homo floresiensis, an extinct hominin species that lived on the Indonesian island of Flores between 74,000 and 18,000 years ago. Image credit: Elisabeth Daynes.

“Each of us carry within ourselves the genetic traces of these past mixing events,” said Dr. João Teixeira, co-author of a paper published in the Proceedings of the National Academy of Sciences.

“These archaic groups were widespread and genetically diverse, and they survive in each of us. Their story is an integral part of how we came to be.”

“For example, all present-day populations show about 2% of Neanderthal ancestry which means that Neanderthal mixing with the ancestors of modern humans occurred soon after they left Africa, probably around 50,000 to 55,000 years ago somewhere in the Middle East.”

But as the ancestors of modern humans traveled further east they met and mixed with at least four other groups of archaic humans.

“Island Southeast Asia was already a crowded place when what we call modern humans first reached the region just before 50,000 years ago,” Dr. Teixeira said.

“At least three other archaic human groups appear to have occupied the area, and the ancestors of modern humans mixed with them before the archaic humans became extinct.”

In their new research, Dr. Teixeira and his colleague, Professor Alan Cooper, analyzed genetic, archaeological and fossil evidence as well as additional information from reconstructed migration routes and fossil vegetation records.

The scientists found there was a mixing event in the vicinity of southern Asia between anatomically modern humans and a group they named Extinct Hominin 1 (EH1).

Other interbreeding occurred with Denisovans in Island Southeast Asia and the Philippines, and with another group — named Extinct Hominin 2 (EH2) — in Flores, Indonesia.

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#1. To: Ada (#0)

Well, then it's not quite accurate to say these other humanoid species are extinct, is it?

Pinguinite  posted on  2019-07-30   20:48:34 ET  Reply   Untrace   Trace   Private Reply  


#13. To: Pinguinite (#1)

No longer a distinct human species

Ada  posted on  2019-08-01   0:26:59 ET  Reply   Untrace   Trace   Private Reply  


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