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

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.
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.

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

Answer 1

The statement that is true about cystic fibrosis is:

Cystic fibrosis is caused by a deletion mutation.

Cystic fibrosis results from a specific deletion mutation in the CFTR gene, where three nucleotides are removed, leading to the loss of a phenylalanine amino acid in the protein. The other statements are false. Cystic fibrosis affects both men and women and has a range of symptoms, making it not a silent disorder. Additionally, the genetic cause of cystic fibrosis is well understood, so it is incorrect to say it is not known why it happens in people.