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Karin Bojs: Fresh Denisova-six and a new species of human being

Nature presents Homo luzoniensis, a new human species was about a meter long and lived on the island of Luzon in the Philippines. the Cell present new dna ana

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Karin Bojs: Fresh Denisova-six and a new species of human being

Nature presents Homo luzoniensis, a new human species was about a meter long and lived on the island of Luzon in the Philippines.

the Cell present new dna analysis that shows that we had a child with the so-called Denisovamänniskor several times, and that such crosses seem to have been astonishing, far in the future.

Read more: New human species may have been discovered in the cave

understand the drama in these two news we need to know a little bit about the background:

the Man ways divorced from the chimpanzees for six, seven million years ago. For about two million years ago, some of our human predecessors leave Africa and venture out into the rest of the world.

The so-called neanderthals have been known since the mid-1800s. They lived and developed in Europe and parts of Asia over several hundred thousand years and died out about 40,000 years ago (when we arrived).

Homo sapiens have been known in fifteen years. It was a dvärgmänniska that was over a meter long and lived on the island of Flores in Indonesia to any point in time to 50,000 years ago (when we arrived).

the so-called Denisovamänniskan. It is found in Denisovagrottan in the altai mountains in southern Siberia. Unlike the neanderthals and the Homo sapiens is Denisovamänniskan from the beginning classified on the basis of their dna, not according to how the skeleton looks.

Dna analyses has for the last nine years has also shown that people of our sort had common offspring with neanderthals. It was probably in the Middle east for about 54,000 years ago, when we had just wandered out of Africa. In addition, we have crossed the us with Denisovamänniskor, and it seems to have been further to the east.

Previous research has shown traces of Denisova of modern sibirier, ursprungsamerikaner and east asians. Now publishes Cell the new dna-analyses of the 161 persons now living, from New Guinea and Indonesia. Papuanerna carries dna traces from two completely different inflows of Denisova. A happened for about 46.000 years ago somewhere in the Pacific. The other occurred for 30,000, or possibly as late as for 14.500 years ago, in the vicinity of New Guinea.

on the different Denisovalinjerna. They seem to have gone their separate ways for several hundred thousand years ago and should perhaps be regarded as different species. But the researchers in the Cell refrains from using difficult language.

Researchers writing in this week's issue of Nature dare, however, hit with that they have found the Homo luzoniensis – a completely new species. Their classification is based on teeth and some bones of at least three individuals, around 67.000 years old and, like Homo floresienesis strikingly småvuxna. Something the dna, the researchers have not managed to extract. Therefore, it is difficult to know how the Homo luzoniensis, Homo floresiensis and Denisovamänniskor were related with each other.

But what we can definitely say at this point is that human evolution is fuzzy and complex. As evolution always tends to be. Not least on the isolated islands, where the development will go faster and will be extra clear. So was it also with the finches on the Galapagos that inspired Charles Darwin when he first described the evolutionary mechanisms 160 years ago.

left Africa and went all over the world died the other människosorter out quickly. Time and time again, in place after place. But in really inaccessible areas in Asia and Oceaniens archipelago could be the second apparently survive for thousands of years. And any time we met, so close that the outcome of the meeting was a child.

Before the group died out, and we became lonely people on earth.

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