A nurse is planning to teach the parents of a child with cystic fibrosis about the disorder. Which statement should the nurse include in this explanation?
1. "While all people carry the gene CFTR, which is responsible for cystic fibrosis, those who develop the disease have a mutation in that gene."
2. "A small percentage of the general population carries the gene for cystic fibrosis. If two carriers have children, then 25% of those children will develop the disease."
3. "One in four people carry the gene for cystic fibrosis. If two carriers have children, then 25% of those children will develop the disease."
4. "Some people carry the gene for cystic fibrosis. Of those carriers, one in four will develop the disease."
Correct Answer: 1
Every individual carries the gene cystic fibrosis transference regulator. Those who develop the disease have a mutation in that gene. The other answer choices are all incorrect as they indicate that only a few carry the gene for cystic fibrosis.
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