From bustling Tokyo to the Isle of Man in the Irish Sea, from Novosibirsk in Siberia to the equatorial city of Quito, from congested Cairo to the desert town of Truth or Consequences, New Mexico, people everywhere comprise a single family.
Researchers on Thursday underscored that point, unveiling the most comprehensive family tree for Homo sapiens ever devised, based upon both modern and ancient genome data from more than 3,600 people from around the world. They dubbed the results the "genealogy of everyone."
The study, spearheaded by the University of Oxford's Big Data Institute, also documented how extinct human species such as the Denisovans and Neanderthals left genetic descendants among modern-day people around the world, though not in Africa. "Our method uses DNA sequences to learn about the ancestral relationships between individuals. Informally, what we try to do is to trace how genetic mutations, which occurred in our ancestors, and the bits of genome in which they occur have been passed down through the generations to the present day," Wohns said.Other studies have indicated that groups of Homo sapiens departed Africa at various times in the ancient past.
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