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(a) Why is human ABO blood group gene co...

(a) Why is human ABO blood group gene considered a good example of multiple alleles?
(b) Work out a cross up to `F_(1)` generation only, between a mother with blood group A (Homozygous) and the father with blood group B (Homozygous). Explain the pattern of inheritance exhibited.

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(a) This is because more than two alleles govern the human ABO blood group gene.
(b)
Thus the child will have blood group AB. This pattern of interitance is called co-dominance.
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