Zitat des Tages von Spencer Wells:
Imagine you're copying a very long document, and occasionally you'll put an A where there should be a C. And that mistake has been translated down through the generations, and more mistakes have accumulated. So the longer the lineage has been in existence, the more mistakes the sequence is going to have.
It turns out that every person alive today can trace his or her ancestry back to Africa. Everyone's DNA tells a story of a journey from an African homeland to wherever you live.
