Cystic fibrosis (CF) is a disorder caused by a random change in the gene that produces the cystic fibrosis transmembrane conductance regulator (CFTR) protein. In people with CF, random CFTR gene changes can disrupt the CFTR protein's normal production or function- ing. This protein is typically found in several organs, and as a result, the lungs, pancreas, di- gestive system, and other organs are affected. The symptoms of CF can range from breath- ing difficulties to recurrent infections. Which of the following best describes the effects of cystic fibrosis? A B с D Cystic fibrosis is caused by a gene with multiple alleles. Cystic fibrosis is inherited via incomplete dominance. Cystic fibrosis is a pleiotropic gene. Cystic fibrosis is caused due to polygenic inheritance.

Cystic fibrosis (CF) is a disorder caused by a random change in the gene that produces the cystic fibrosis transmembrane conductance regulator (CFTR) protein. In people with CF, random CFTR gene changes can disrupt the CFTR protein's normal production or function- ing. This protein is typically found in several organs, and as a result, the lungs, pancreas, di- gestive system, and other organs are affected. The symptoms of CF can range from breath- ing difficulties to recurrent infections. Which of the following best describes the effects of cystic fibrosis? A B с D Cystic fibrosis is caused by a gene with multiple alleles. Cystic fibrosis is inherited via incomplete dominance. Cystic fibrosis is a pleiotropic gene. Cystic fibrosis is caused due to polygenic inheritance.

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Description: Cystic fibrosis (CF) is a disorder caused by a random change in the gene that produces thecystic fibrosis transmembrane conductance regulator (CFTR) protein. In people with CF,random CFTR gene changes can disrupt the CFTR protein's normal production

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter9: Cell Communication

Section: Chapter Questions

Problem 1ITD

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A human gene called theCFTR gene (for cystic fibrosis transmembrane regulator) encodes aprotein that functions in the transport of chloride ions across the cellmembrane. Most people have two copies of a functional CFTR geneand do not have cystic fibrosis. However, a mutant version of the CFTRgene is found in some people. If a person has two mutant copies ofthe gene, he or she develops the disease known as cystic fibrosis. Arethe following descriptions of this disease related to genetics at themolecular, cellular, organism, or population level?A. People with cystic fibrosis have lung problems due to a buildupof thick mucus in their lungs.B. The mutant CFTR gene encodes a defective chloride transporter.C. A defect in the chloride transporter causes a salt imbalance inlung cells.D. Scientists have wondered why the mutant CFTR gene is relativelycommon. In fact, it is the most common mutant gene that causesa severe disease in persons of Northern European descent. Onepossible explanation why…
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