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Exam4_Fall_2010_Key

Exam4_Fall_2010_Key - GENE3200 Fall 2010 Bedell Exam 4 Dec...

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GENE3200 – Fall 2010 – Bedell Exam 4 – Dec 2 ID no. 810 _____________ KEY _______________ 1 Write your ID number (810 number, NOT SSN) on every page. Write your initials on the first page only. All of the multiple choice questions have only one correct answer. The exam should be completed in ink. Regrades will not be given if you write in pencil. All requests to re-grade an exam must be made in writing to Dr. Bedell within 48 hours of the grades being posted on WebCT. 1. (2 pts) Which term is the best term to use for a small DNA element that can move from one place to another in a genome? (a) Retroposon (b) Transposable element (c) Transposase (d) Transposition (e) None of the above 2. (2 pts) Which term is the best term to use for a small DNA element to moves in the genome with the aid of an RNA intermediate? 3. (2 pts) Which of the following is considered to be a hallmark of transposons? 4. (1 pt). True or false . All LINEs and SINEs in the human genome are autonomous transposable elements. 5. (1 pt). True or false . All transposable elements encode reverse transcriptase. 6. (2 pts) Which is NOT a possible consequence of a transposable element (TE)? (a) Inactivation of a gene through insertion of a TE into a coding region of a gene. (b) Altered expression of a gene through insertion of a TE into a regulatory sequence. (c) Reversion of a mutant phenotype by precise excision of a TE. (d) A chromosomal rearrangement through unequal crossing-over between two TEs. (e) Generation of a nonconservative substitution. 7. (2 pts) Which type of bacteria can grow in minimal media that includes glucose but has no amino acid supplements? 8. (2 pts) Which type of gene transfer in bacteria requires direct contact between live bacteria? (a) Transformation. (b) Conjugation (c) Transduction (d) all of the above (e) none of the above 9. (1 pt). True or False . In E. coli, Hfr strains can be mated with F + strains. 10. (1 pt ) True or false . The lysogenic cycle of phages results in lysis of infected bacteria.
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GENE3200 – Fall 2010 – Bedell Exam 4 – Dec 2 ID no. 810 _____________ KEY _______________ 2 11. (1 pt ) True or false. An integrated copy of a temperate bacteriophage is called a prophage. 12. (2 pts). Which of the following results in production of an F’ plasmids?
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