Blood Types Problem Set

Problem 1: Is a type O possible in this situation?

Could you please help me? I have a question that is NOT a homework question. I am a Junior in High School. "Could a man with type B blood and a woman with type AB produce a child with type O blood?" I think not, because type O is recessive, and the B's seem to be dominant. My cousin thinks yes. Thank you for your help. -- Vicki

A. Possible

B. Not possible
Dr. Hallick's reply:
The children of a man with type B blood and a woman with type AB blood could be type A, type B, and type AB, but not type O.

The Biology Project
University of Arizona
Thursday, October 23, 1997
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