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According to an international research project performed over the past four years, about 1 to 4 percent of modern humans have the genome of Neanderthals.
An analysis of DNA taken from the Altai Mountains in Siberia has revealed that another species of humans may have lived with modern humans (Homo sapiens) and Neanderthals (Homo neanderthalensis) about 40,000 years ago. The ancient hominid member is being informally called X-Woman.