Wednesday, 16 March 2011
Spencer Wells builds a family tree for humanity
Spencer Wells is a genetics who wants to create a family tree of humanity from our DNA. He has travelled around the world investigating the diversity and the origin of people. He is analyzing our direct ancestors and how the world’s population spread from one place. He approaches this question with different manner. He is looking for the answer in our DNA. Our DNA contains information which can unveil the origin of our ancestors. The DNA carries information from paternal and maternal side which traces our ancestors to Africa. This means that Africans had been accumulating this mutational diversity. In other words, we have been originated in Africa, it’s written in our DNA. The DNA proves that within 200 000 years we all share one ancestor, a single person, - Mitochondrial Eve who gave rise to all the diversity of the world today.
The presentation of Spencer Wells is very interesting. I never thought about that all the world’s population goes back to a one single person. Moreover, our DNA carries information which can say who was our predecessor. I found it very useful because it can help those people who want to create more precise family tree and find their distant relatives. He described how the human population diverted from Africa and spread to the world. Furthermore, the fact that we all came from Africa and the center of human evolution is there amazed me.