NCLEX RN Practice Exam Related

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The mother of a male child with cystic fibrosis tells the nurse that she hopes her son's children won't have the disease. The nurse is aware that:

  • A. There is a 25% chance that his children will have cystic fibrosis.
  • B. Most of the males with cystic fibrosis are sterile.
  • C. There is a 50% chance that his children will be carriers.
  • D. Most males with cystic fibrosis are capable of having children, so genetic counseling is advised.
Correct Answer: B

Rationale: Most males with cystic fibrosis are sterile due to congenital absence of the vas deferens, significantly reducing the likelihood of having biological children.