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Loren Booda
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It is said that all humankind is at most six social relationships removed from each other. How many blood relationships at most currently remove every human from each other?
The greatest degree of blood separation in humans is the ABO blood group system, which classifies blood into four main types: A, B, AB, and O. This system is based on the presence or absence of certain antigens on the surface of red blood cells.
The ABO blood group system is determined by the inherited genes from both parents. These genes determine the type of antigens present on the surface of red blood cells, which in turn determines the blood type.
The rarest blood type in the ABO system is AB, which is found in less than 5% of the population. This blood type has both A and B antigens on the surface of red blood cells.
No, a person's blood type does not change over time. It is determined by genetics and remains the same throughout their life.
The ABO blood group system is crucial in determining compatibility for blood transfusions. A person can only receive blood from a donor with the same or compatible blood type to avoid potentially life-threatening reactions.