HEREDITY
GENE INTERACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A woman who has blood type O has a child with a man that is blood type AB. What is the % chance of heterozygous type B in their offspring?
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25%
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0%
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50%
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100%
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Explanation:
Detailed explanation-1: -In most cases, an O parent and an AB parent will have only A or B kids. I added a table at the end of this answer that has all blood type combinations for two parents plus the possible blood types for their children.
Detailed explanation-2: -You can stop worrying… an A parent and an O parent can definitely have an O child. In fact, each child of these parents could have a 50% chance of being O.
Detailed explanation-3: -One combination, OO, gives blood type O. So there’s a 1 out of 4, or 25% chance, that the child will have blood type O and 3 out of 4, or 75% chance that the child will have blood type A.
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