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美国国家地理学会的遗传学家斯班瑟•威尔斯利用DNA技术经过多方的寻找，终于找到这位人类祖先———科学亚当。今天，他的基因已经遍布于地球上每个男人的身上。

Geneticists have developed just such a tool. A way to follow DNA trails deep into the past. Our search for Adam cover genetic secrets of an unexpected cast of characters. One of the greatest warriors in history. One of America’s founding fathers. Even an Ethiopian prince who claims to be the descendent from the ancient biblical king. What links these men to scientific Adam? Their DNA. Most of our DNA is a jumble from our own ancestors . It’s what makes each of us unique. But there is a section of our genetic code that stays almost constant. The Y chromosome , the special piece of DNA that only men have. It’s passed virtually unchanged from father to son like a family name. The Y chromosome links the men of today with the men who lived in the past. This tiny piece of DNA allows us to travel back in time through humanity history. These days we use DNA to test whether a man is the biological father of a child. Could it really link the billions of men alive today back to one ancestor?

Wales believes the answer is YES! That the Y chromosome could trace the origins of /men from all over the world. From Africa to America, all the branches on the tree join up in one trunk. The Y chromosome links men today back to their common ancestors. The key is to reveal super ancestors, men who left their genetic imprint on huge numbers. They are like branching points or bias sections of the tree come together in a single man. Geneticists can trace them further and further back down the tree to the ultimate super ancestor-----scientific Adam.

Our search starts at an unlikely place with the super ancestor passed his DNA to millions. He left such a vast legacy. Wales thinks he can trace it in a bar in San Francisco. The Bay View Boat Club is a watering hall for a group of Mongolian immigrants. These men have an outrageous claim They think they are descendents from the great Mongo emperor, Genghis khan.