Question

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)
Responses

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

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.

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

Answer 1

The correct statement about cystic fibrosis from the options provided is:

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

Cystic fibrosis results from a specific mutation in the CFTR gene, with a common one being the deletion of three nucleotides that leads to the loss of a phenylalanine residue. The other statements are incorrect; cystic fibrosis is not a silent disorder and affects both men and women. Additionally, the mechanisms of inheritance and mutation are well understood in cystic fibrosis.