Blood Types

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A husband is homozygous for A-type blood (I^A I^A) and his wife is heterozygous for B-type blood (I^B i). What are the possible blood types for their child?

• A and B

• A and AB

• B and AB

• A, B, and AB

If a husband is homozygous for A-type blood (I^A I^A) and his wife is heterozygous for B-type blood (I^B i), what is the probability their child will have B-type blood?

• 0%

• 25%

• 50%

• 75%

Two parents are heterozygous for A-type blood (I^A i). What is the probability their child will have O-type blood?

• 0%

• 25%

• 50%

• 75%

Mr. Miller has AB type blood (I^A I^B) and Mrs. Miller has O type blood (ii). Their daughter Christina has B type blood. What is Christina's genotype?

• I^B I^B

• I^B i

• I^A I^B

• ii