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Explain the inheritance of ABO blood groups. not too long pls.


The four blood types are type A, type B, type AB, and type O. There are two antibodies and two antigens that are responsible for the blood type that is inherited. The combination of these antibodies and antigens determine the type. I am attaching a link to a chart that makes blood type inheritance much easier to understand.

A person who has type B blood will have antigen B attached to their red blood cells. Because of this, they will not produce antibody B, but they will produce antibody A. If they did produce antibody A, the blood would basically attack itself.

A person with type A blood has the exact opposite antigens and antibodies as a person with Type B blood.

People with type AB blood have both A and B antigens so they therefore do not produce either antibody.

People with type O blood do not produce either antigen, therefore they produce both antibodies.

Blood type is genetically inherited (chromosome 9) by alleles (genes) from each parent. A and B are dominant over O.

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