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What is the probability that a mother with type AB blood will have a child with type O?

*
25%
50%
0%
75%
100%

User Ben Wilber
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1 Answer

4 votes

Answer:

Expert Verified Answer

Step-by-step explanation:

The probability that a mother with type AB blood (homozygous dominant, AB) will have a child with type O (homozygous recessive, oo) is 50%.

A mother with type AB blood (AB) is a carrier of both the A and B alleles. When this mother has a child, she can pass along either the A allele or the B allele to her offspring.

If the father of the child is also a carrier of the o allele (e.g. type O, type Ao, or type BO), then there is a 50% chance that the offspring will inherit the o allele and will have the O blood type. This is because the o allele is recessive, meaning that it can only be expressed if two copies of the allele are present (oo). Since the father has at least one copy of the o allele, the offspring has a 50% chance of inheriting the o allele and having the O blood type.

User Calmrat
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