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28 June, 17:13

Blood typing in humans depends on three alleles. The A and B alleles are codominant, and the O allele is recessive. An AB blood type mother has children with a B blood type father (genotype BO). What are the chances that their children will have AB type blood?

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  1. 28 June, 17:41
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    25%

    Explanation:

    If a mother of blood type AB has children with father of blood type BO than there is a 25% chance that they had a child with blood type AB.

    As the mother has two alleles A and B.

    Father has two alleles B and O. So there are total of 4 sequences AB, AO, B, and BO.

    AB 25%

    AO 25%

    B 25%

    BO 25%
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