View Blood Type Ab History Images. Like eye color, blood type is passed genetically from your parents. They were discovered in 1900 and 1901 at the university of vienna by karl there are four principal types:
How Do Blood Types Work Oneblood from www.oneblood.org
Like eye color, blood type is genetically inherited from your parents. Rare blood types do exist, and people with these typically have to bank their own blood over time for use in an emergency. 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.
You inherited your types from your parents and the environment in which you live can not change them.
In the 19th century, no one understood that people had different blood types. There are no a or b antibodies in the blood plasma. Human blood type is determined by antigens on the red blood cells. Blood type ab is found in less than five percent of the population.
