NCIE
NCIE
Where did the intelligent man come from?
An international team of researchers presented an alternative theory of the origin of intelligent man.
According to Hightek , the most common evolutionary theory suggests that Homo sapiens arose from a single local population of the predecessor species of the genus Homo in Africa between 300,000 and 100,000 years ago . Our ancestors actively spread across the continent and beyond and gradually pushed out or assimilated other species.
In a study published in the journal Nature , an international team of biologists and geneticists used genetic analysis of modern Africans and their ancient ancestors, as well as statistical modeling, to determine the origins of Homo sapiens.
The researchers found that the best model of human evolution in Africa involves multiple populations that interbred and migrated over time. At least two evolutionary branches of Homo sapiens split between 120,000 and 135,000 years ago, but continued to intermingle.
Geneticists believe that this "weakly structured stem" ( which consists of a mixture of these two branches ) contributed to the formation of the ancestral African human group , which then branched into modern African populations as well as populations living outside of Africa.
The results of the research provide a new perspective on human evolution, scientists say.
