A new study suggests that an ancient population (not yet discovered in fossils) of a very human nature could leave a genetic legacy that can still be seen in some modern West Africans. Hominid ghosts According to UCLA geneticists Arun Durvasula and Sriram Sankararaman, these extinct species of Homo sapiens were able to transmit their genes to the African ancestors of the current Yoruba and Mende from approximately 24,000 years or more. As such, the surviving DNA of these ancient hominids is sufficiently different from those of the Neanderthals as of the ancient Denisovans to suggest that, in fact, they were a completely different kind of hominid, one that had not been discovered before in fossil form. . According to the scientists' report, which was published Wednesday in the journal Science Advances, the genomes of the Yoruba and Mende groups contain about 2 to 19 percent of the genetic material of this mysterious "ghost population," which resulted in traits that They include tumor suppression, hormone regulation and even influence their survival enhancing functions. According to the researchers, these genes are likely to spread rapidly among a good number of today's West Africans, but not only the West Africans inherited some of the genes because Durvasula and Sankararaman found that DNA from the Chinese Han in Beijing and the residents from Utah. With ancestry from northern and western Europe he also showed some signs of what is now classified as an ancient hominid "ghost." Unfortunately, these groups were not studied as extensively as those of the individuals of the Yoruba and Mende group. According to the researchers, their findings add evidence to the recent study that states that several Homo species cross each other, leading to the evolution of modern African days. For example, H. sapiens groups probably crossed with Neanderthals from Europe after leaving Africa 60,000 to 80,000 years ago. Then, they took the DNA of the Neanderthals to Africa about 20,000 years ago.
"Although the ancient humans who returned to Africa may have already mated with members of the former ghost population, it is more likely to have crossed into Africa," Sankararaman said, pointing to the African fossils of H. sapiens that show Neanderthal features.
New research shows that diet and nutrition changed significantly for the first hominids 3.5 million years ago. Creative Commons (TagsToTranslate) ancient hominids (t) yoruba (t) mende (t) neanderthals (t) ancient denisovans (t) western african (t) traits (t) genes (t) tumor suppression (t) hormonal regulation (t)) functions for survival improvement (t) miscegenation (t) study (t) hominid ghost (t) homo sapien species