Where is the CFTR gene expressed at the highest levels?
A) lungs
B) reproductive system
C) intestines
D) brain
E) skin

Question

Where is the CFTR gene expressed at the highest levels?
A) ​lungs
B) ​reproductive system
C) ​intestines
D) ​brain
E) ​skin

Quizplus · Accepted Answer

The CFTR gene is primarily expressed at the highest levels in the lungs, where it plays a crucial role in regulating salt and fluid balance on the surface of lung epithelial cells. Mutations in the CFTR gene can lead to the development of cystic fibrosis, a chronic respiratory disease characterized by thick, sticky mucus buildup in the lungs. While CFTR is also expressed in other tissues, such as the reproductive system and intestines, it is most highly expressed in the lungs. Therefore, choice A is the correct answer.

Where Is the CFTR Gene Expressed at the Highest Levels