Want to know where your ancestors came from? Soon you may be able to tell by testing your DNA.
The New York Times has an article (http://www.nytimes.com/2008/08/13/science/13visual.html?_r=1&em&oref=slogin) about a team of biologists who have constructed a genetic map of Europe that shows the degree of relatedness between its various populations. All the populations are quite similar, but the differences are sufficient that it should be possible to devise a forensic test to tell which country in Europe an individual probably comes from, according to Manfred Kayser, a geneticist at the Erasmus University Medical Center in the Netherlands.
The original study is available at http://www.current-biology.com/content/article/fulltext?uid=PIIS0960982208009561