I recently did my ancestry DNA, which I believe goes back 500 years. Here are my results: 55% Great Britain, 17% Scandinavian, 10% Irish, 7% Iberian Peninsula, 6% Finland/Russia, 3% Italy/Greece and the other is Caucasus. After reading about ancestry and looking at the maps I was wondering if there is any way to tell which of the 12 tribes we have descended from? Is that even possible?