Chapter 7 Answers - Study Guide Chapter 7 Answers 1 A-4 B-2...

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Study Guide Chapter 7 – Answers 1. A—4; B—2; C—1; D—3 2. Choice (d) is the correct answer. Such changes would probably destroy the function of the promoter, making RNA polymerase unable to bind to it. Decreasing the amount of sigma factor or RNA polymerase (choices (a) or (b)) would affect the transcription of most of the genes in the cell, not just one specific gene. Introducing a stop codon before the coding sequence (choice (c)) would have no effect on transcription of the gene, since the transcription machinery does not recognize translational stops. Moving the termination signal farther away (choice (e)) would merely make the transcript longer. 3. Choices (a), (c), and (d) are the correct reasons. Choices (b) and (e) are true for both primase and RNA polymerase. 4. 1. A poly(A) tail must be added. 2. A 5 cap must be added. 3. Introns must be spliced out. (“Export from nucleus” is also an acceptable answer.) 5. The change creates a stop codon (TGA, or UGA in the mRNA) very near the
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Chapter 7 Answers - Study Guide Chapter 7 Answers 1 A-4 B-2...

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