Why Are Most Infants with Phenylketonuria Usually Healthy at Birth

question 8

Multiple Choice

Why are most infants with phenylketonuria usually healthy at birth?

• A) The defect causing the condition has usually been repaired by that time.
• B) The mother breaks down phenylalanine for both herself and her fetus.
• C) The infant can produce sufficient quantities of the enzymes needed by birth.
• D) Phenylalanine can be completely excreted in infants.
• E) Phenylalanine is completely metabolized in infants.

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Definitions:

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