I think its either O neg, AB neg or Rhesus D Positive.
ABO blood typing is a method for differentiating individuals' blood based on the presence or absence of two antigens, A and B. The most common blood type in the world is O positive, which has neither the A nor the B antigen.
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+.
I think it's type ABOf the "normal" A, B, AB, and O typings, AB is the least frequent. Otherwise, Bombay (O type with missing H antigen) phenotype is the least frequent.
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+.
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.
A person with blood type AB cannot give blood to anyone but can receive blood from anyone
Her blood type will be A.
A
In addition to type A, B, and O, there is type AB. This blood type is the rarest of the four.
Ia Ib
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.
Blood type (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cells.