New study Discovers Genes of new unknown human species contained in DNA of Pacific Islanders
Scientific research has just uncovered something amazing in regards to populations living in the islands of the south pacific. The DNA of modern Melanesians found in the region of the South pacific northeast of Australia carry hints of a new human species unknown and unidentified by scientists today.
After research scientists have found the DNA bears no resemblance to the two common human species of Neanderthal or Denisovan but is a third species unknown to scientists thus far. The unknown human species have been investigated by Ryan Bohlender a statistical geneticist form Texas University who stated ‘We’re missing a population, or we’re misunderstanding something about the relationships,”.
1 Extinct DNA still lives in Human species
Bohlender and his team have been researching extinct DNA of Hominid species which may still be present in modern hominins or humans. What they found were amazing snippets of proof that previous scientific analysis is suggesting that Neanderthals and Denisovans were the only sources responsible for present human species isn’t entirely correct.
As per Bohlenders research, early ancestors migrated out of Africa almost 100,000 years ago. They first came into contact with hominid species living in the landmass of Eurasia. The contact made its mark on the species that evolved into human beings. This developed into a combination of early Europeans and Asians who carry the distinct genetic cocktail in their genomes. Hence Melanesians are known as thus.
2 What does the discovery mean for evolution?
Through computer modeling Bohlender and team found that Europeans and Chinese carry 2.8% of Neanderthal DNA. Europeans don’t have any Deniosvan ancestry whereas Chinese have 1%. This alone proves a lot. Modern populations of the South Pacific islands like Papua and New Guinea, Fiji, and New Caledonia among others featured 2.74 % of Neanderthal DNA. Denisovan DNA featured only 1% in comparison to 3.5 % as thought by scientists earlier.
It is these statistics that helped Bohlender prove that a third group of hominids or early human species have bred with ancestors of Melanesians. The complete sequencing of DNA of Neanderthals and Denisovans will now provide scientists with valuable insight into human history and evolution.
3 Research considered hypothetical by experts
As of now scientists still haven’t pinpointed the new group. “Who this group is we don’t know,” lead researcher Eske Willerslev told Hesman Saey. Concrete evidence in the shape of fossils is necessary to proving beyond doubt that a third race indeed existed, until then, Bohlers estimates will remain hypothetical proof.
The new study although being considered hypothetical by some was perhaps the largest comprehen sive genetic study of indigenous Australians till date. The research also proved that Indigenous Australians turned out to be the earth’s oldest continuous civilization with origins as far back as 50,000 years ago.
4 What’s the difference between Neanderthal and Denisovan?
Neanderthals and Hominids are the two major spices who migrated out of Africa 300,000 years ago. Neanderthals settled in Europe and central Asia. Denisovans were discovered fairly recently in 2008 when the discovery of a 400,000 year old tooth and pinkie bone of a young girl in a cave in Siberia made headline news. Upon examination it was found that it had enough DNA to support the existence of a new species other than the Neanderthal.
However between the Denisovan genome and the genes of present day people in Papua and New Guinea, there was found an overlap of genes which led to the possible discovery of a third hominid species. What is amazing about the discovery is the fact that it has been sourced from DNA of modern civilization.
5 New human species proven but yet to be identified
The best possible theory matching the new research is the results availed from the comprehensive study mentioned earlier and which was undertaken at Cambridge University involving genes of 83 aboriginal Australians who spoke the Pama Nyungan language. The study revealed that Papuan and Aboriginal ancestors had migrated from Africa around 72,000 years ago. A branch of these then split from the main groups 58,000 years ago.
It revealed Papuan and Aboriginal ancestors left Africa around 72,000 years ago and then split from the main group around 58,000 years ago. They ultimately arrived at the continent of Sahul which was a combination of Tasmania, Australia and New Guinea. It was then that they picked up DNA from Neanderthals, Denisovans and an extinct third group along the way.