Question

how blood groups are inherited ?

Answer 1

The four blood groups are A,B,AB and O,arise from inheriting one or more .


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Answer 2

The four ABO blood groups, A, B, AB and O, arise from inheriting one or more of the alternative forms of this gene (or alleles) namely A, B or O. The A and B alleles are codominant so both A and B antigens will be expressed on the red cells whenever either allele is present.