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CHAPTER 9PATTERNS OF INHERITANCE MULTIPLE CHOICE 1. Which of the following organs are likely to be affected by a defective CFTR protein? a. lungs b. intestines c. heart d. lungs and intestines e. heart and intestines ANS: D PTS: 1 DIF: Difficult OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 2. In cystic fibrosis patients, a. chlorine ions are stuck inside epithelial cells. b. water is excessively abundant on surfaces of epithelia. c. surfaces of epithelia are relatively dry. d. chlorine ions are stuck inside epithelial cells, and water is excessively abundant on surfaces of epithelia. e. chlorine ions are stuck inside epithelial cells, and surfaces of epithelia are relatively dry. ANS: E PTS: 1 DIF: Difficult OBJ: Bloom's Taxonomy: Knowledge | Bloom's Taxonomy: Comprehension | Bloom's Taxonomy: Analysis TOP: MENACING MUCUS 3. An individual would develop cystic fibrosis if he carries ____ mutated CFTR gene(s). a. 1 b. 2 c. 3 d. 4 e. 5 ANS: B PTS: 1 DIF: Easy OBJ: Bloom's Taxonomy: Knowledge | Bloom's Taxonomy: Comprehension TOP: MENACING MUCUS 4. What type of inheritance does the cystic fibrosis gene exhibit? a. complete dominance b. incomplete dominance c. codominance d. X-linked e. more than one of these depending on epigenetic conditions ANS: C PTS: 1 DIF: Easy OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 5. To what disease do individuals heterozygous for cystic fibrosis have increased resistance? a. hemophilia b. Tay-Sachs c. typhoid d. diptheria e. cholera ANS: C PTS: 1 DIF: Easy OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 6. Why has cystic fibrosis persisted at such a high percentage in some populations? a. affected individuals reproduce before the disease is fatal b. there is an advantage to being a carrier c. recessives have a higher fitness than dominants d. it is an easily treated disease e. the symptoms disappear in early adulthood ANS: B PTS: 1 DIF: Moderate OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 7. Which of the following is the most fatal genetic disorder in the United States? a. cystic fibrosis b. Huntingtons disease c. sickle cell anemia d. anhidrotic dysplasia e. fibromyalgia ANS: A PTS: 1 DIF: Easy 136 Patterns of Inheritance OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 8. The mutated gene that causes cystic fibrosis is a. CFTR b. CRFT c. CTFR d. CRTF e. CFRT ANS: A PTS: 1 DIF: Moderate OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 9. What does the normal protein that is encoded by the cystic fibrosis gene do? a. transports chloride ions across membranes b. delivers chloride ions to the endoplasmic reticulum c. binds chloride ions to DNA prior to gene expression d. binds chloride ions to bacteria so they are more easily recognized by white blood cells e. the normal protein does more than one of these things ANS: A PTS: 1 DIF: Moderate OBJ: Bloom's Taxonomy: Knowledge TOP: MENACING MUCUS 10. Which of the following organs have epithelial lined passageways and ducts that are affected ... View Full Document

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