Tibetans-Gene Inherited

Picture from BBC News-Tibetan altitude gene inherited 'from extinct species'

Tibetans have inherited a special Gene from a species called the Denisovans who lived between half a million to fifty thousand years ago. The special gene allows them to tolerate height. It thins their blood and thus makes them insusceptible to height related sicknesses. Tibetans live at very high altitudes. 

I am not surprised that Tibetans carry a special gene.  After all it is a matter of survival. What surprised me is that how the scientists connected the Tibetan Gnome aberration to the extinct species Denisovian's gene sequence. Harder still is to believe that the Denisovian gene sequence was established from a tiny fragment of a girl's little finger bone found somewhere in Russia. 

Now that is science!