Cystic Fibrosis

Cystic Fibrosis ( 34 Questions)

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Question 8 :

A nurse is discussing the underlying genetic defect in cystic fibrosis (CF) with a client. Which of the following statements accurately describes the primary genetic abnormality in CF?

A "CF is caused by an extra chromosome, leading to genetic imbalance."

Incorrect. CF is not caused by an extra chromosome; it is a genetic disorder resulting from mutations in specific genes.

B "In CF, there is a duplication of the CFTR gene on chromosome 7."

Incorrect. CF is not characterized by a duplication of the CFTR gene but rather by various mutations in this gene.

C "CF results from a mutation in the CFTR gene, which codes for a dysfunctional chloride channel."

Correct. CF is primarily caused by mutations in the CFTR (cystic fibrosis transmembrane conductance regulator) gene, leading to the production of dysfunctional chloride channels.

D "CF is characterized by the absence of the CFTR gene in affected individuals."

Incorrect. CF is not characterized by the absence of the CFTR gene; instead, it involves various mutations in this gene.

Cystic Fibrosis

Cystic Fibrosis ( 34 Questions)

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