Use the Following Information for This Question

question 108

Multiple Choice

Use the following information for this question:
Phenylketonuria is considered to be an inborn error of metabolism.It is a recessive genetic condition in which the enzyme that breaks down the amino acid phenylalanine is defective or missing.Testing of all newborns allows this condition to be detected at birth.A special diet that severely minimizes phenylalanine (e.g. ,by avoiding diet sodas and most usual sources of protein) can treat the condition.
In this scenario,two carriers of both cystic fibrosis and phenylketonuria have a child.
What is the probability that the child will have cystic fibrosis and be a carrier for phenylketonuria?

• A) 6.25%
• B) 12.5%
• C) 18.75%
• D) 56.25%
• E) 0%

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Definitions:

Nutrients Absorbed

The process by which the body takes in and utilizes vitamins, minerals, and other nutritional substances.

Digestive Tract

The series of hollow organs joined in a long, twisting tube from the mouth to the anus, through which food is digested and nutrients are absorbed.

Peristalsis

The series of wave-like muscle contractions that move food through the digestive tract.

Major Depressive Disorder

A mental health disorder characterized by persistently depressed mood or loss of interest in activities, causing significant impairment in daily life.