A new study published in the journal Nature recently found that modern humans evolved from at least two places in Africa.
This was done by researchers at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany and Eleanor Scerri claims that there is “there is no single birthplace in Africa, and human evolution is a process with very deep African roots”
According to research, our species appeared in Africa about 300,000 to 100,000 years ago. “Fossils such as those from the Jebel Irhoud sites in Morocco, Herto in Ethiopia, and Klasies River in South Africa demonstrate that anatomical features derived from Homo sapiens were found across the continent 300−100 thousand ago year”
The scarcity of available Homo sapiens fossils from the early stages of our evolution has made it difficult to work out how our species emerged and spread across Africa before migrating to other parts of the world. towel.
Research says that “It is unclear whether these fossils and archaeological sites represent populations that contributed to the establishment of contemporary H. sapiens as population precedents or as local ‘dead ends’”
What did the research reveal?
The study was performed on the genomes of 290 living people from four geographically and genetically diverse African groups.
According to the report “This study combines genome sequencing data from existing populations in east and west Africa as well as the Nama people of southern Africa. This spread of 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,” Henn said. “It’s a specific model of human evolution.”
“We used a new algorithm to quickly test hundreds of possible scenarios,” said Simon Gravel, co-senior author of the paper and Associate Professor in the Department of Human Genetics at McGill University. ”, the report further added his statement stating “that the algorithm was originally written to understand genetic disease risk and its differences between populations, and it took us deep into human origins.”
The study exposed 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.
The second population, called Stem2, continues to live in Africa. The original humans2 eventually evolved into modern humans.
The Nature report reads “Finally, there are still many questions about human origins. Henn wanted to add DNA from other African regions to the model to see if that would change their results. She also hopes to use the data to make predictions about the fossil record, such as what features will be found in human fossils in a particular region.”
.jpg)
Source: Nature
The Nature report reads “Finally, there are still many questions about human origins. Henn wanted to add DNA from other African regions to the model to see if that would change their results. She also hopes to use the data to make predictions about the fossil record, such as what features will be found in human fossils in a particular region.”
Categories: Optical Illusion
Source: pagasa.edu.vn