What is the distribution of blood types worldwide?

Moleman

There are four 'classical' blood groups O, A, B, and AB. Most human populations have individuals of all four types, and even parents and children, as well as brothers and sisters, may belong to different blood groups. However, some blood groups are more frequent in some countries than in others. The gene for A blood, for example, increases in frequency from east to west in Europe; B blood is most frequent in some populations of India, Tibet, Mongolia, and Siberia. A majority of American Indians apparently had, before the arrival of Europeans and Africans, the O blood group only; however, the tribes of the Blackfoot and Bloods had the highest known frequencies of A blood, which is also very frequent among the Sami in northern Europe. May 26 00, 3:10 PM

zbeckabee

A - A+ 34% A- 6% B - B+ 9% B- 2% AB - AB+ 3% AB- 1% O - O+ 38% O- 7% http://sinclair.quarterman.org/who/bloodtypes.html Feb 12 08, 6:41 PM