Ancient genome linked to modern humans

[Health24]   A group of ancient humans called Denisovans - who were closely related to Neanderthals - may have contributed somewhat to the modern human genome, say scientists who sequenced the Denisovan genome. The existence of the Denisovans only came to light in 2010 when a piece of a finger bone and two molars were discovered in the Denisova Cave in southern Siberia.