Download Worldwide Blood Type Percentages Background. Don't know where to start? Blood type distribution is also varied.

The rarest blood type is called rhnull.

This is another antigen found on red however, because blood type is linked to genetics, there is no single type that's considered to be the rarest worldwide. To answer this question, we must first understand that a blood type is classified as rare if fewer than 1 in. Blood provides an ideal opportunity for the study of human variation without cultural prejudice. Africa is not excluded from this world analysis.