Written answer/problems. Type the full answer to each part of the question.
George is blood type B, and his father is blood type A. Sally is blood type B and both of her parents are blood type AB.
1. George mother = IaIa, IaIo
2. George = IbIb, IbIo
Sally = IbIb, IbIo
George and Sally offsprings -
1. IbIb × IbIb = IbIb (B)
2. IbIo × IbIo = IbIb (B), IbIo (B), IoIo (O)
3. IbIb × IbIo = IbIb (B), IbIo (O)
3. Their child will have O blood type only if both George and Sally are IbIo.
Probability that George is IbIo = 1/2
Probability that Sally is IbIo = 1/2
IbIo × IbIo
|Ib||IbIb B||IbIo B|
|Io||IbIo B||IoIo O|
Probability of IoIo (O) = 1/4
Final answer = 1/2 × 1/2 × 1/4 = 1/16
4. Probability of B = 3/4
Final answer = 1/2 × 1/2 × 3/4 = 3/16
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