DNA Testing – Humans' First Steps
DNA testing reveals that humans first originated in sub-Saharan Africa.
The perception that humans began their journey through life on the African continent has for a very long time been considered as anthropological fact. Some scientists have predicted that human beings evolved 56,000 years ago from the African continent before moving out during the Stone Age to other continents across the world. DNA testing however has confirmed the theory that humans did originate in Africa.
DNA testing reveals genetic variability
DNA testing can reveal genetic variability. By doing DNA tests and examining genetic diversity throughout the world, scientists have discovered that humans spread out from only one single area in sub-Saharan Africa. British scientists have used DNA testing, genetics and skull measurements to indicate that humans emerged from this one area in southern central Africa.
African under the skin
The saying that we are all African under the skin is however genetically true. The researchers have found a fall in genetic diversity the further that they moved away from Africa, showing small groups of humans spread from a single area in Africa. DNA testing that reveals our ancestral genealogy is an increasingly popular pastime. In America, the DNA testing craze has taken off in a big way leaving commentators to declare that the country is re-addressing its true identity in an ‘identity revolution’. DNA testing is showing that racial lines are more blurred than many Americans were led to believe.
DNA Testing Trends
DNA testing in America costs just a few hundred dollars, and allows Americans to re-think their whole identity by the use of a simple swab sample. Americans are now able to match their DNA profiles with many famous historical figures such as Marie Antoinette and Genghis Khan. Some people are using DNA testing to discover links to try and profit from their own genealogy – there have been instances in America where some Native Americans who have found wealth on the back of casino gambling have been inundated with calls from people claiming to be of Native American descent.
Black Americans and DNA Testing
Black Americans have always struggled with their roots and identity as a result of the slavery. The slave trade cut off all their links to their past and just homeland and skin colour remained as the only real link back to Africa. Now DNA tests are revealing that skin colour alone does not tell the complete story. For some black Africans, DNA testing is however offering a way to find out many more details to do with the specific regions or tribes in Africa that they are descended from, allowing them at last finally be able to reconnect with their history and roots.
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