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How To Work Out Chid Blood Group From Parents

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People are divided into four main blood types: A, B, AB and O, depending on which antigens they carry. Every individual inherits one antigen from each of their parent. A and B antigens are called the 'dominant' ones.
This means if a person has one B and one O antigen, the B will be dominant over the O and their blood reacts as the type B.

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