Download Blood Type Rarity Chart World Background. Blood type o is the most common throughout the world. Blood typing is particularly important for blood transfusions, because certain antigens on blood cells can trigger a person's immune system to attack the donated blood.
Information regarding blood types including charts outlining donor compatibility and childs blood below is a chart showing possible blood type of a child according to their parents blood group(s).
…until the end of the second world war, physical anthropology usually meant the comparison of various physical characteristics of the body between different human. It can be easily classified for many different genetically we have learned a good deal about how common each of the abo blood types is around the world. Blood provides an ideal opportunity for the study of human variation without cultural prejudice. Blood type distribution is also varied.
