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Genetics
Public Health and Safety
Blood Types
Blood Transfusions

Explain blood type?

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Wiki User
December 09, 2007 7:17PM

Blood types, as people commonly know, has a classification which is simply based on two things:

* ABO group

* Rhesus factor Now, the ABO group, depends on two antigens; antigen A and antigen B. which lie on the surface of the RBC:

* A person having an A antigen on his RBC cells will show a blood type of A * A person having a B antigen on his RBC cells will show a blood type of B * A person having both A & B antigens on his RBC cells will show a blood type of AB * A person having neither of those antigens will show a blood type of O Second, the rhesus factor, which depends on a single antigen; antigen D, which also lies on the surface of the RBC:

* A person having a D antigen is called an Rh positive, e.g. A, B and D antigens' presence exhibit a blood type of AB+ (universal acceptor)

* A person without the D antigen is called an Rh negative, e.g. Neither A, nor B, nor D antigens' presence exhibit a blood type of O- (universal donor). Both factors combine to form the blood types as we know them today.