Question

which statement is false regarding the scientific discoveries that have impacted the knowledge base and treatment of cystic fibrosis?
scientists have discovered more than 1,000 different alleles of the cftr gene.
cf is a recessive hereditary condition.
scientists discovered the specific mechanism by which tgfb1 influences the severity of cf symptoms.
ivacaftor effectively restores cftr channel function.
the most common mutation is δf508.

Explanation:

Cystic fibrosis (CF) is a recessive hereditary condition. There are more than 1,000 different alleles of the CFTR gene, and the most common mutation is ΔF508. Ivacaftor is a drug that effectively restores CFTR channel function. However, as of now, the specific mechanism by which TGFB1 influences the severity of CF symptoms has not been fully discovered.

Answer:

C. Scientists discovered the specific mechanism by which TGFB1 influences the severity of CF symptoms.