New genomic data challenges traditional view of human evolution

A new study published in the journal Nature recently shows that modern humans evolved from at least two places in Africa.

Research conducted by researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and Eleanor Scerri suggests that there is “There is no single birthplace in Africa and human evolution is a process with very deep roots in Africa”

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According to one study, our species originated in Africa about 300,000 to 100,000 years ago. “Fossils such as those from Jebel Irhoud in Morocco, Herto in Ethiopia and the Klasies River in South Africa show anatomical features derived from Homo sapiens found across the continent 300-100 thousand years ago.”

The scarcity of available fossils of Homo sapiens from early stages of evolution has made it difficult to understand how our species emerged and spread across Africa before migrating to other places. other in the world. become a challenge.

Research says “It is unclear whether these fossils and archaeological sites represent the population that contributed to the establishment of modern H. sapiens as a population precedent or a local ‘dead end’”

What did the research reveal?

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The study was performed on the genomes of 290 living people from four geographically and genetically distinct African groups.

According to the report “This study includes genome sequencing data from extant populations in East and West Africa as well as the Nama people of southern Africa. This increase in genomic data has helped researchers understand and track the historical movement of genes across generations.”

“We really wanted to sit down and systematically evaluate the models in a more creative way,” Hen said. “In particular, it is a new model of human evolution.”

“We used a new algorithm to quickly test hundreds of possible scenarios,” said Simon Gravel, co-author of the paper and an associate professor in the Department of Human Genetics at McGill University. go out”. , the report went on to add to its statement. , have content:that the algorithm was originally written to understand genetic disease risk and how it varies across populations, and that it led us deep into human origins.”

The study presents the data as two populations called Stem1 and Stem2. The first population, called Stem1, lived in Africa for hundreds of thousands of years. About 600,000 years ago, a small group of humans from Stem1 became Neanderthals.

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Another population, called Stem2, continues to live in Africa. Stem2 humans eventually evolved into modern humans.

A report from the journal Nature reads “Finally, many questions remain about human origins. Henn wanted to add DNA from other African regions to the model to see if that would change their results. also hope to use the data to predict the fossil record, such as the features that might be found in human fossils from a particular region.”

Source: Nature

A report from the journal Nature reads “Finally, many questions remain about human origins. Henn wanted to add DNA from other African regions to the model to see if that would change their results. also hope to use the data to predict the fossil record, such as the features that might be found in human fossils from a particular region.”

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