Question

Frank and Julia have learned that they are both carriers for the recessive disease PKU and...

Frank and Julia have learned that they are both carriers for the recessive disease PKU and also have the rare AB blood type.

What is the probability that they will have a child with PKU and the rare AB blood type?

a.

3/16

b.

1/8

c.

1/2

d.

1/16

e.

1/4
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Answer #1

Answer. B. 1/8

Explanation-

PKU is an autosomal recessive disorder in which homozygous recessive individuals are affected and heterozygous individuals are the carriers.

ABO blood grouping is due to multiple alleles and AB blood type is due to codominance of IA and IB alleles.

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