The "penetration" of Type B bloodtype into Eastern, Central and Western Europe is a tribute to their "advance". I don't see all that many Buddhists in that area these days, so something happened, eh?!
I hope you picked up on the article about a single "Y" chromosome being found in some 10% of all the males in that vast swath of territory conquered and held by the Mongols. It is being attributed to Ghengis Khan himself! Supposedly he is one of history's greatest fornicators!
You don't suppose he held the line at sleeping with Christian girls do you?