A client has been diagnosed with an autosomal recessive disorder that developed in middle adulthood. No other people in his family have manifested the disorder. The client asks the nurse why he is affected and if his children are at risk
What would the nurse consider when formulating a reply? Note: Credit will be given only if all correct choices and no incorrect choices are selected.
Standard Text: Select all that apply.
1. The client's mother is a carrier of the disorder.
2. The odds are high that at least one of the client's four younger siblings either is a carrier for the disease or will develop it in later life.
3. The client's father is a carrier for the disorder.
4. Because the disorder is recessive, the client's children have a 25% chance of having inherited it.
5. All of the client's children are at least carriers of the disorder.
1,2,3,5
Rationale 1: For the client to inherit an autosomal recessive disorder, his mother must have the disorder or be a carrier for it.
Rationale 2: Each sibling has a 50% chance of being a carrier and a 25% chance of developing the disease.
Rationale 3: For the client to inherit an autosomal recessive disorder, his father must have the disorder or be a carrier for it.
Rationale 4: The client's children have a 50% chance of being affected.
Rationale 5: As this client has manifested the disorder, it is clear he inherited two recessive genes. The father must contribute one gene to each child, so it must be a recessive gene, making the children carriers. If the children's mother also has the disorder or is a carrier, the children's chances of developing the disorder are higher.
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