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Imagine that a newly discovered, recessively inherited disease is expressed only in individuals with type O blood, although t

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Answer #1

IAIO (man)    IBIO (woman)

                  *  

IAIB      IAIO     IBIO    IOIO

IOIO = O blood group

1/4 =0.25

The probability that second time the child may have the disease.

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