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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 ... View Full Document

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