When discussing blood types, the two groupings most commonly used are the ABO (A, B, AB, O) and Rh (+, -) systems. The least common blood type in humans is Bombay (EXTREMELY rare), which is a type O with missing H antigen. Otherwise, of the "normal" ABO and Rh typings, the least common group is AB-. ABO from most to least frequent: O, A, B, AB. The relative frequencies of these groups varies depending on race. The relative frequences of Rh+ and Rh- individuals also varies with race. About 85% of "whites" are Rh+, while 99.8% of American Indians are Rh+.
The most common blood type in the UK is O+. 37% of the population in the UK has O+ blood type followed closely behind by A+ with 35%. O+ is the most common because it is the universal donor which means it can give blood to any other type although O+ can only receive O+ blood.
The least common form of business organization in the US is the partnership.
The least common form of business organization in the US is the partnership.
I think its either O neg, AB neg or Rhesus D Positive.
AB- 1%In the UK the ABO type that is most common is O, AB is least common and A is more common than B. However it is more common to be RhD +ve, hence O+ is the most common blood group in the UK, but the order of common blood types will vary depending on where a given person is from.
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partnership
partnership
partnership
O Positive
O Positive
There are 30 human blood group systems that are recognised. In the commonly used ABO and Rh system the blood type AB- is the least common with never more than 1% of the population of a country having this type of blood.
Blood type O is the most common in both the US. as well as the world. Actually type O+ is the most common. Type O- is the most common of the RH negative blood types.