Some modern Homo sapiens from Africa. According to the University of Adelaide, Australia, emigrated from Africa to cross and cross with four hominids of other species. Of all these, only Neanderthals and Denisovans have been recorded so far.
Research links humans with four species of extinct hominids, modern Homo sapiens from Africa. According to the University of Adelaide, Australia, emigrated from Africa. But the DNA of the two remaining unnamed species has been found in the samples of the modern population.
Each one of us gets on the genetic trail of the events of these past mixtures, co-author of an article published in the Proceedings of the National Academy of Sciences, Dr. Joao Teixeira said. These archaic groups were very widespread and genetically diverse, and they survive in each of us.
Your story is an integral part of how we become. For example, all current populations show about 2% of Neanderthal ancestry, which means that the mixture of Neanderthal with the ancestors of modern humans occurred shortly after leaving Africa, probably 50,000 to 55,000 years ago from somewhere in the Middle East.
But, modern human ancestors would have traveled further east than expected and would have met with at least four other archaic human groups. The island was already a crowded place in Southeast Asia, which we call modern humans, who first came to the region 50,000 years ago, said Dr. Teixeira.
At least three other archaic human groups have occupied the region, and the ancestors of modern humans merged with them before the extinction of archaic humans. Reconstruction of Homo florescensis, a species of extinct hominids that lived on the Indonesian island of Floors between 74,000 and 18,000 years ago.
Dr. Teixiera and his colleague, Professor Alan Cooper, analyzed evidence and archaeological, genetic and fossil remains and provided additional information, reorganizing their migration routes and even records of fossil vegetation.
For example, it was interesting how events in South Asia were mixed with a mixture of 1 ‘hominids and modern humans. Denisovans and ‘hominid 2’ crossings were recorded throughout Southeast Asia and the Philippines and Floors, Indonesia.
We knew that history outside of Africa was not simple, but it seems to be more complex than we thought. The Southeast Asian island region was clearly occupied by many archaic human groups, possibly living in relative isolation from each other for hundreds of thousands of years before the arrival of the ancestors of modern humans.
Time also seems as if the arrival of modern humans occurred immediately after the disappearance of archaic human groups in each region. Estimated route (yellow and red arrows) of the movement of anatomically modern humans across the island of Southeast Asia about 50,000 years ago: populations of modern predators with genetic data are shown in red.
Populations grown in black are shown in color; The predicted genomic content of EH1 (purple), Denisovan (red), EH2 (brown) and non-parasitic (gray) is shown in the pie chart as relative proportions observed in Australian-Papuans (complete circles).
Gray populations with large amounts of Denisovan genomic material are located east of the Wallace line; Incidents of independent introversion with Denisovan groups have been speculated for both the common ancestor and the ISEA populations of Australia-Papua.
The Philippines (red orbit 2) and, separately, for the Philippines (red orbit 4); The indication for a different introduction with an unknown hominid in the flowers recorded in the genomic data of today’s populations, remains less safe (brown circle 5); The exact position of introverted events 2, 4 and 5 is currently unknown.
A study shows that ancient humans have love with mysterious relatives, Neanderthal idols with modern humans. A girl makes nose to nose with a statue of Neanderthal in Germany. Ancient DNA research increasingly reveals the genetic link between modern humans and our extinct ancestors, including Neanderthals and the mysterious Denisovans.
A new improved index of ancient human relativistic genomes suggests that Homo sapiens did not have sex with only Neanderthals and that humans had a smaller line of understanding called Denisovans. A fourth man, the secret descent was also in the mix.
As reported by the news arm of the journal Nature, the new genetic evidence suggests that many hominids, the current living cousins of human relatives, chimpanzees, were buried more than 30,000 years ago.
This group of kissing cousins included an unknown human ancestor not yet revealed by ancient DNA records. It is implied that it could be similar to Homo Erectus or something, said Charles Laluaja-Fox.
A researcher at the University of Palojenomiks FBRA Fabra of Spain, who did not participate in the research, but the findings made by the conclusion were present in a conversation.
On November 18 at a meeting sponsored by the former DNA Royal Society of London, Harvard Medical School and lead author David Reich. Homo erectus is an extinct human species that originated in Africa and spread to Asia. [See images of our nearest human ancestor]
Ancient human lineage
Neanderthals are an extinct group of humans who lived about 30,000 and 130,000 years ago. Despite their reputation as bone-headed mannequins, Neanderthals advanced as modern humans in areas such as toolmaking, although they were probably less socially skilled.
Denisovans are a much more mysterious group. These first human beings lived in Siberia and possibly separated from the tree branch of the human family that will eventually rise to Neanderthals approximately 300,000 years ago. Little is known about how Denisovans lived and how they were.
But Neanderthals, Denisovns and shows the genetic analysis of modern human beings that there were three groups were sometimes make sex and have children. Denisovan genes appear in the modern islands of the Pacific and in people in Southeast Asia and southern China.
Neanderthal genes appear in 1 to 4 percent of modern Eurasians, suggesting that Homo sapiens and Neanderthal intervened after modern humans left Africa. For unknown reasons, Homo sapiens is the only human survivor, since everyone else in the genus Homo finally became extinct.
New genomes, new discoveries
New research has been submitted to a scientific journal for publication. According to the rules of the magazine, the main writer cannot speak with the media about the study of the Reich until the newspaper is published.
Created a reporter Nature News, which more or less the complete sequence of the Denisovn Neanderthal genome and which those who report, however, joined the discussion on November 18 Reich and his colleagues used in the previous research.
Sexual sequences with ancestors that confirmed the previous findings Denisovanos Pacific islands and East Asians, but also a surprising finding was: genetic fingerprints were found Denisovn genes from an unknown population of human ancestors.
Which first that would be more suggest intrbriding. Mark Thomas, an evolutionary geneticist at University College London, described the ancient environment as the “God of the human type world” with many human populations.
Laluza-Fox said that the question of the fourth mysterious ancestor is an “archaeological debate,” but that the genetic work done by Reich and his colleagues opens the door to a deeper understanding of the personal diversity of ancient human ancestors.
He said the new techniques would help researchers protect the original DNA from contamination later. Some samples that were not considered suitable for genomic approaches will now be good samples,” LaLueza-Fox said.
In the past, Laluza-Fox said, geneticists tried to find more information about human evolution from modern human DNA. Now, he said, they can go directly to the old DNA.
“We are trying to understand human evolution by studying the modern human genome, but we clearly missed part of the image, which is now emerging from the old hominid genome,” said Laluza-Fox.
Editor’s Note: The story was updated on December 3 to correct “India” to “Africa” in the third paragraph. Follow Stephanie Pappas on Twitter and Google+. Follow us on @sciencenews02, Facebook and Google+. Original article in LiveScience.
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