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Exam 3 (2008 c) - Biol 3301 3rd Midterm-Blue December 4th...

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Biol 3301 3 rd Midterm -Blue December 4 th , 2008 There are a total of 10 pages in this exam. This exam consists of 35 questions worth a total of 100 points. All questions are multiple choice and there is one best answer for each question. Record your answers on the scantron sheet. Answer only once for each question or you will be automatically marked wrong. Use a #2 pencil. Name_________________________ Peoplesoft ID#__________________________
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Question 1: The ty1 transposable element a. transposes by a “cut and paste” mechanism b. is used to transform Drosophila c. transposes through an RNA intermediate d. encodes genes that make a protein capsid e. c&d Question 2: Dissociation is a nonautonomous transposable element because: Question 3: When McClintock found that Activator underwent a “changed state” the new state resembled the phenotype of having multiple Ac elements in the same endosperm. The effect of increasing the number of Ac elements in the presence of the chromosome breaking Ds element is: Question 4: Transposable elements dispersed throughout a chromosome can generate genomic rearrangements. Duplications can occur through: Question 5: You have discovered a mutant octopus that has a fleshy proboscis. In breeding studies, you have determined that this neo-nose is encoded by a simple dominant mutation (only one gene). Interestingly, adding more copies of the wild type gene resulted in octopi with noses of three to four nostrils, while placing the mutant over a deficiency reduced the size of the nose and it had only one nostril. This mutation is most likely a: a. Neomorph b. Antimorph c. Hypermorph d. Hypomorph e. Amorph
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Question 6: According to the Luria-Delbruck Fluctuation tests:
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