In cystic fibrosis,the most common mutation produces a non-functional protein that controls the flow of chloride ions into and out of the cell.

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This statement is true. The mutation that is most commonly associated with cystic fibrosis is known as F508del, which results in a non-functional or improperly folded protein called the cystic fibrosis transmembrane conductance regulator (CFTR). This protein is responsible for controlling the movement of chloride ions into and out of cells, particularly those in the lungs, pancreas, and other organs affected by the disease. When the CFTR protein is faulty, it can lead to the buildup of thick, sticky mucus in these organs, causing a range of symptoms and complications related to cystic fibrosis.

In Cystic Fibrosis,the Most Common Mutation Produces a Non-Functional Protein