A client has been diagnosed with a rare autosomal recessive disorder. Which finding is the nurse most likely to assess in the client's pedigree?
1. Deaths from other autosomal recessive disorders
2. Many families units with only one child
3. Marriages between first cousins
4. An unusual number of adopted children
3
Rationale 1: This disease could be the only autosomal recessive disorder in the family.
Rationale 2: There is no reason to believe that the presence of an autosomal recessive disorder would limit the number of children born in a family.
Rationale 3: Consanguinity narrows the gene pool in a family and results in more cases in which two persons with an autosomal recessive disease have children together.
Rationale 4: The number of adopted children and the presence of an autosomal recessive disorder have no effect on each other.
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