A strong relationship emerged between the ancestors of the Chinese and Indian tribes in America. It is based on the results of ancient human DNA research in Yunnan, China.
derive from detikInet As predicted by some experts, the people who live in the Malu Dong Cave or Red Deer Cave in southern China are not extinct human species.
Instead, based on DNA analysis, the results suggest that they are part of the modern human family. However, the population proves to be scientifically significant for a different reason.
It is known that human remains were first discovered in 1989 in the Red Deer Cave in Yunnan, South China. In 2012, the latest discovery was greeted with joy as it revealed that they represented some of the last living representatives of the human species other than Homo. sapiens
It is believed that the cave dwellers were a hybrid population between Neanderthals or Denisovans and modern humans. It is all based on the size of the bones and teeth left in the cave.
Neither the newly discovered bones, nor the re-examination of specimens kept in museums, yielded any DNA that could be sequenced at the time. This is surprising considering the warm climate in the region.
However, a paper in Current Biology later turned that, and changed his previous ideas about who the red deer were the cave dwellers.
“Ancient DNA techniques are very powerful tools,” said senior author Dr. Bing Su from the Kuoming Institute of Zoology.
“This tells us with some certainty that the Red Deer Cave people were modern humans and not ancient species, such as Neanderthals or Denisovans, despite their unusual morphological features.”
DNA was extracted from a skull found in a cave and it is about 14,000 years old. Ironically, the Neanderthal-like skull size and relatively small brain space were the main features that led researchers to think that the cave dwellers at the time were not modern humans.
Having established the status of the Red Deer Cave people as members of our species, Su and co-authors searched for their closest living relatives by comparing skull DNA with existing populations.
This analysis shows strong associations with Native Americans as well as modern East Asians. Compared to other ancient DNA, the 13,900-year-old specimen from Siberia and the closest association with the oldest human DNA found in the Americas was found.
The finding that Native Americans have strong historical ties with East Asia is nothing new. But the Red Deer Cave findings have led the authors to propose a different migration path than previously thought.
Having been residents of Siberia for a long time, rather than the first people to cross the Pacific, they speculate that one population lived for a period in southern China, before some of them traveled north, perhaps to Japan. Along a coastal route through.
The findings also add to growing evidence of considerable genetic diversity of hominins in Southeast Asia during the last ice age, some of which is reflected in the size of their bones.
Meanwhile, this paper also notes that Yunnan is still the most ethnically and linguistically diverse region in China today, as well as a center of plant and animal biodiversity.