A Couple Is Both Heterozygous for the Autosomal Recessive Disease

question 26

Multiple Choice

A couple is both heterozygous for the autosomal recessive disease cystic fibrosis (CF) .What is the probability that their first child will either be a boy or have CF?

• A)6/8
• B)5/8
• C)3/8
• D)2/8
• E)1/8

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