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Sunday, September 9, 2018

Concept of Race African Genetics and Biology

Concept of Race African Genetics and Biology

Those people and race are a perception prevalent in elitist culture and history and has no foundation in the sciences. Ubuntu African philosophy "Umuntu ngumuntu ngabantu" means that a person is a person through other people.






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Dr. Sarah Tishkoff professor of Genetics and Biology at the David and Lyn Silfen University of Pennsylvania studying Africa's genetics,“If you ask somebody on the street what are the main differences between races they will say skin color,” said Sarah A. Tishkoff in an interview on October 12, 2017. This is wrong thinking because humans develop color with special cells in the skin containing pouches, called melanosomes packed with pigment molecules. The more pigment, the darker the skin and this has nothing to do with race.


Researchers found eight genetic variants in four narrow regions of the human genome that strongly influence pigmentation some making skin darker, and others make it lighter. These genes are shared across the globe, it turns out; one of them, for example, lightens skin in Europeans and Africans. The research “dispels a biological concept of race,” Dr. Tishkoff said.


There is an extensive amount of ethnic diversity in Africa and genetic evidence is now pointing to East Africa as the cradle of humanity. There is an extensive amount of ethnic diversity in Africa and genetic evidence is now pointing to East Africa as the cradle of humanity. In 1924, the Taung child a fossilized skull of a young child who lived about 2.8 million years ago in Taung, South Africa was discovered. Lucy at 3.2 million years old in November 1974 in the Afar region of Ethiopia was unearthed.

Ubuntu African philosophy "Umuntu ngumuntu ngabantu" means that a person is a person through other people
Ubuntu African philosophy "Umuntu ngumuntu ngabantu" means that a person is a person through other people

In 1987, three scientists announced in the journal Nature that they had found a common ancestor to us all, African Eve was a woman who lived in Africa 150,000 years ago. The theory is all people alive today can trace some of their genetic heritage through their mothers back to this one woman. In 2008 another species of Australopithecus, A. sediba was discovered in South Africa, it lived around 2 million years ago. Dr. Sarah Tishkoff is a professor of Genetics and Biology at the University of Pennsylvania studying genetic material variations, human evolution, and disease risk in global populations.


Since 2001, Dr. Tishkoff studies observable characteristics of ethnically diverse Africans, such as shape, stature, size, color, and behavior that results from the interaction of its genetic makeup with the environment. Her studies hope to reveal African history and how genetic variation can show for example why humans have different susceptibility to disease.


Dr. Tishkoff genetic diversity research can shed light on modern-day diseases, such as diabetes and obesity. Africa also has a high prevalence of several infectious diseases including HIV, malaria, and TB, resulting in millions of deaths per year. DNA samples from around 9,000 geographically and ethnically diverse Africans with distinct diets such as hunter-gatherers, pastoralists, and farmers were collected.  Dr. Tishkoff and her team studied 121 African populations, four African American populations, and 60 non-African populations.


The Khoisan people of Southern Africa was previously thought to possess the oldest DNA lineages, but those of the Sandawe tribe of central Tanzania are older. This suggests southern Khoisan originated in East Africa, according to Dr Tishkoff. Modern humans originated in Africa around 200,000 years ago and then spread across the rest of the globe within the past 100,000 years.


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