European DNA vs San people DNA (South Africa)

Africa people are the first humans on Earth , that is the reasonwhy Africa is called the motherland. The following information is proving facts about Europe DNA and Africas DNA. -------------------------------------------------------------------------------------------------------__-------------- Everyone living outside of Africa today has a small amount of Neanderthal in them, carried as a living relic of these ancient encounters. A team of scientists comparing the full genomes of the two species concluded that most Europeans and Asians have between 1 to 4 percent Neanderthal DNA. Indigenous sub-Saharan Africans have no Neanderthal DNA because their ancestors did not migrate through Eurasia. On one level, it’s not surprising that modern humans were able to interbreed with their close cousins. According to one theory, Neanderthals, Denisovans, and modern humans are all descended from the ancient human Homo heidelbergensis. Between 300,000 to 400,000 years ago, an ancestral group of H. heidelbergensis left Africa and then split shortly after. One branch ventured northwestward into West Asia and Europe and became the Neanderthals. The other branch moved east, becoming Denisovans. By 130,000 years ago H. heidelbergensis in Africa had become Homo sapiens. Our modern human ancestors did not begin their own exodus from Africa until about 60,000 years ago, when they expanded into Eurasia and encountered their ancient cousins. another could help explain one of the great mysteries in anthropology: Why did the Neanderthals disappear? After first venturing out of Africa, Neanderthals thrived in Europe for several hundred thousand years. But they mysteriously died out about 30,000 years ago, roughly around the same time that modern humans arrived in Europe. Some scientists have suggested modern humans outcompeted or outright killed the Neanderthals. But the new genetic evidence provides support for another theory: Perhaps our ancestors made love, not war, with their European cousins, and the Neanderthal lineage disappeared because it was absorbed into the much larger human population. Even though Neanderthals and Denisovans are both extinct, modern humanity may owe them a debt of gratitude. A 2011 study by Stanford University researchers concluded that many of us carry ancient variants of immune system genes involved in destroying pathogens that arose after we left Africa. One possibility is that these gene variants came from other archaic humans. SAN PEOPLE (SOUTH AFRICAS) OLDEST PEOPLE ON EARTH -------------------------------------------------------------------------------------------------------- The San people of southern Africa, who have lived as hunter-gatherers for thousands of years, are likely to be the oldest population of humans on Earth, according to the biggest and most detailed analysis of African DNA. The San, also known as bushmen, are directly descended from the original population of early human ancestors who gave rise to all other groups of Africans and, eventually, to the people who left the continent to populate other parts of the world. A study of 121 distinct populations of modern-day Africans has found that they are all descended from 14 ancestral populations and that the differences and similarities of their genes closely follows the differences and similarities of their spoken languages. The scientists analysed the genetic variation within the DNA of more than 3,000 Africans and found that the San were among the most genetically diverse group, indicating that they are probably the oldest continuous population of humans on the continent – and on Earth.