Cystic Fibrosis Is a Recessive Disorder

question 80

Multiple Choice

Cystic fibrosis is a recessive disorder.If a couple,each of whom is heterozygous for the CFTR mutation,have children,what is the probability that they will have a child with cystic fibrosis?  

• A)0%
• B)25%
• C)50%
• D)75%
• E)100%

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Combo Box

A user interface control that combines a drop-down list with a single-line textbox, allowing users to select a value from the list or enter a new one.

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