Maternal PKU Can Result in Serious Effects in Fetuses

question 29

Multiple Choice

Maternal PKU can result in serious effects in fetuses. This problem occurs because:

• A) the fetus is homozygous for PKU and therefore cannot metabolize phenylalanine.
• B) the fetus is usually homozygous dominant and therefore has PKU.
• C) the mother is heterozygous for PKU and therefore cannot metabolize phenylalanine.
• D) the mother is homozygous dominant for PKU and cannot metabolize phenylalanine.
• E) the mother is homozygous recessive for PKU and cannot metabolize phenylalanine.

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