Cystic fibrosis is an inherited disorder that is caused when three bases are accidentally removed from the CFTR gene. Which of the following is true about cystic fibrosis?(1 point)

Question

Responses

It is not known why cystic fibrosis happens in people.
It is not known why cystic fibrosis happens in people.

Cystic fibrosis is caused by a deletion mutation.
Cystic fibrosis is caused by a deletion mutation.

The affects of cystic fibrosis only impact women.
The affects of cystic fibrosis only impact women.

Cystic fibrosis is a silent disorder, it has no symptoms.

Answer 1

The correct statement about cystic fibrosis is:

Cystic fibrosis is caused by a deletion mutation.

Cystic fibrosis is indeed caused by specific genetic mutations in the CFTR gene, including a common deletion of three bases that leads to the loss of a phenylalanine amino acid. The other options are incorrect: cystic fibrosis affects both men and women, it is not a silent disorder since it has various symptoms, and there is a well-understood genetic basis for its occurrence.