Wednesday, January 12, 2011

Ancient Denisovans and the human family tree

Last month scientists revealed remarkable evidence of a new group of ancient humans called Denisovans that interbred with our species and left behind a genetic trace in people living in south east Asia today.
Molar tooth from Denisova Cave that scientists obtained a genome from

An international team, including scientists at the Max Planck Institute in Germany, carried out a genetic study of a finger bone and a large molar tooth uncovered in Denisova Cave in the Altai Mountains, Siberia. They sequenced the genome and found that this ancient human shared 4-6% of its genetic material with some present-day Melanesians.

In March, the team obtained a complete mitrochondrial DNA (mtDNA) sequence for the same finger bone, dated to about 40,000 years ago, showing that it was from neither a modern human nor Neanderthal

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