On Thursday, a team of researchers announced the finding a genome from a 4,500-year-old human skeleton in Ethiopia. The recovered DNA of the Ethiopian fossil is quite different from the living Africans.

The research paper published in the journal Science has unveiled that it is the first time that a complete DNA has been retrieved from an ancient human in Africa. The study has now raised hopes among scientists that they can recover genomes from far older human from Africa.

John Arthur, anthropologist at the University of South Florida, St. Petersburg, said from the finding they have been to know that people who came into the region from Eurasia three millenniums back were more in number and had spread more broadly in Africa than previous estimations.

The researchers said the findings indicate that Africans were interacting with the larger world population. Dr. Arthur said that long period of interactions between different cultures like Africans, Europeans, and Eurasians means that people were not only trading, but forming families and developing relationships. It as per the researchers is a better idea than the thinking of migration.

Discovery of remains, named Bayira, was quite unexpected. Researchers said it is important to understand genetic diversity of Africa, as it will help them understand the evolution of anatomically modern humans.

The team said that up to 25% of genes in genomes of eastern Africans currently have DNA from running back 3,000 years ago.

Dr. Arthur suggests a prolonged period of “interaction between Africans, Europeans, and Eurasians. They are not just trading with each other. They are forming families and building relationships. It's much stronger than the idea of migration.”