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Genetic evidence of human 'sister' species?


Posted on Wednesday, 1 August, 2012 | Comment icon 20 comments | News tip by: Pandora7321


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Researchers believe they have uncovered DNA evidence of an unknown sister species of human.

The discovery was made by scientists analyzing the DNA of hunter-gatherers in Cameroon and Tanzania, what they found was that 2% of their DNA appeared to have come from an unknown species of hominid that would have split from modern humans over one million years ago. Interbreeding between modern humans and other human species has been known to happen but this is the first time that a human sister species has been discovered entirely through investigating DNA.

"The evidence for ancient interbreeding is surprisingly convincing," said biologist Richard Green. "There is a signal that demands explanation, and archaic admixture seems to be the most reasonable one at this point."

"Expeditions to Africa may have brought back evidence of a hitherto unknown branch in the human family tree."

  View: Full article |  Source: Science News

  Discuss: View comments (20)

   


 
Recent comments on this story
Comment icon #11 Posted by King Fluffs on 1 August, 2012, 13:41
Why the attempt to start an arguement not related to the thread? I'll assume thread derailment. It's fun for those not involved.
Comment icon #12 Posted by HollyDolly on 1 August, 2012, 13:47
That's a great article. I do believe that our ancestors could have maybe interbred with other human species that are now extinct.They ought to try people from other parts of the world to see what they might come up with in regards to dna. It's possible many europeans have Neanderthal dna amongst Cro Magnon,etc.
Comment icon #13 Posted by paperdyer on 1 August, 2012, 14:18
Come on Simbi - Species wasn't that bad, at least I and II. Any movie with Natasha in can't be all bad. This evidence might explain why certain traits are more dominant than others in interracial children. There may have been more than one "missing link".
Comment icon #14 Posted by BrandOfAmber on 1 August, 2012, 15:49
Actually (not that I think this topic is misplaced on the boards) when I see an article like this one, it indicates further evidence confirming a theory I've held for many years now... That being that Homo Sapiens were not the first 'Human' species to circumnavigate the globe... Elves anyone?
Comment icon #15 Posted by cormac mac airt on 1 August, 2012, 17:13
Actually (not that I think this topic is misplaced on the boards) when I see an article like this one, it indicates further evidence confirming a theory I've held for many years now... That being that Homo Sapiens were not the first 'Human' species to circumnavigate the globe... Elves anyone? And how exactly is that confirmed, since there's no evidence for any member of the genus Homo having existed in North America or South America prior to the arrival of modern humans c.15,000 BP cormac
Comment icon #16 Posted by HoaxHunter on 1 August, 2012, 17:28
This sounds very intriguing. Especially because it makes sense on how Humans that we know today, might actually be the off-spring of other now extinct hominids. Though, we can look at Asians with the large eye sockets and the Africans with their genetics that cause large muscle enhancement. We might still have other forms of hominid roaming amongst us.
Comment icon #17 Posted by cormac mac airt on 1 August, 2012, 17:42
Based on the following from last year, it appears we may have had at least 4 lines mixing with ours in the past: Here we use DNA sequence data gathered from 61 non-coding autonomic regions in a sample of three sub-Saharan African populations (Mandenka, Biaka, and San) to test models of African archaic admixture. We use two complementary approximate-likelihood approaches and a model of human evolution that involves recent population structure, with and without gene flow from an archaic population. Extensive simulation results reject the null model of no admixture and allow us to infer that cont... [More]
Comment icon #18 Posted by Abramelin on 2 August, 2012, 6:02
"Human "sister" species detected. By studying DNA samples extracted from 15 hunter-gatherer people living in Cameroon and Tanzania, a team of biologists was able to detect the genetic signature of a long-extinct species closely related to humans. This related species to the modern human most likely existed in isolation for a long time, but its DNA eventually joined the Homo sapiens gene pool through interbreeding. "There is a signal that demands explanation, and archaic admixture seems to be the most reasonable one at this point," says UC Santa Cruz genome biologist Richard "Ed" Green. More re... [More]
Comment icon #19 Posted by Abramelin on 2 August, 2012, 6:11
And how exactly is that confirmed, since there's no evidence for any member of the genus Homo having existed in North America or South America prior to the arrival of modern humans c.15,000 BP cormac Lol, I remember I once had a discussion with 'Legioromanes/Marduk' about this. I once visited a little museum (La Recoleta,Jesuits) in Arequipa. Peru, and there they showed a fossilized skull of an obvious 'primitive' human, with large protruding eyebrows. They had dug it up near a river. There are times I think I only dreamt it... http://www.unexplained-mysteries.com/forum/index.php?showtopic=134... [More]
Comment icon #20 Posted by Cyaneyed on 2 August, 2012, 14:42
This reminds me of an episode of Sliders where they mention a theory from the 60's about another line which was basically a predatory human species, can anyone remember the name of that theory? Edit - Remembered, it was this


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