Between 400,000 and 48000 BC, a human group, called the Denisovans, lived in Asia. Later, they, lived with human living from Africa along the coast of South Asia. In 2010 an evidence from a Siberian cave in 2008 showed that their DNA was similar to the DNA of people from New Guinea, which consisted of 4.8% Denisovoan DNA. Around 3-5% of the DNA from native people of Papua New Guinea, Australia, Philippines and other nearby islands came from Denisovans, who left Africa around 800,000 BC.
In 2014, scientists revealed genetic between Denisovans and some modern-day Tibetans and Sherpas.
Scientists have found oldest DNA evidence of humans’ biological history. The finding rather adds to new mysteries than clarifies human evolution.
The scientists reported in the journal Nature that they had found ancient human DNA from a fossil showing date back around 400,000 years. The fossil,which is a thigh bone found in Spain, showing link to a forerunner of Neanderthals.
But its DNA shows a different story. It resembles DNA of Denisovans.
The mismatch between the anatomical and genetic evidence wondered the scientists, who now ponder over human evolution over the past hundred thousand years.
Moreover it is also possible that there are many extinct humans communities that scientists have yet to discover. Scientists are hoping against hope that future findings and studies of ancient people DNA will solve the mystery.
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