We are all Africans?

13 Mar

australopithecus afarensis

“Olduvai Gorge and the other fossil hominid sites, together comprising a crescent that runs south from Ethiopia and parallels the continent’s eastern shore, have confirmed beyond much doubt that we are all Africans. The dust we breath here, blown by zephyrs that leave a coating of grey tuff powder on Olduvai’s sisals and acacias, contains calcified specks of the very DNA that we carry. From this place, humans radiated across continents and around a planet. Eventually, coming full circle, we returned, so estranged from our origins that we enslaved blood cousins who stayed behind to maintain our birthright.”

~The World Without Us by Alan Weisman

2 Responses to “We are all Africans?”

  1. Annie Wang April 11, 2013 at 2:39 pm #

    There’s also Mitochondrial Eve, who is the most recent common ancestor of all humans. She was the most recent woman that all living humans today descended from, on their mother’s side. Geneticists did this by tracing mitochondrial DNA, which is only passed down from the mother, unlike chromosomal DNA, which is a mixture of genetic material from both the father and the mother. And guess what? MItochondrial Eve lived in East Africa!

    Here’s the wikipedia page: http://en.wikipedia.org/wiki/Mitochondrial_Eve

    • juliamilner April 11, 2013 at 2:44 pm #

      Very cool! Thanks for sharing, Annie!

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