Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12, Problem 18CONQ
Mutations that occur at the end of a gene may alter the sequence of the gene and prevent transcriptional termination.
A. What types of mutations would prevent
B. What types of mutations would prevent
C. If a mutation prevented transcriptional termination at the end of a gene, where would gene transcription end? Or would it end?
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a. How do bacteria increase the efficiency of gene expression? Is this possible in eukaryotes?
b. A mutation in the promoter of Gene K disrupts an enzyme binding site and results in the loss of
Gene K expression. Is this change in gene expression likely happening at the transcriptional or the
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c. Propose three different mutations to prevent initiation, elongation, and termination of bacterial
transcription, respectively. Explain how/why each mutation would prevent its respective step. (Hint:
mutations can be in genes that encode proteins or regulatory DNA sequences)
When the amino acid levels in eukaryotic cells are low, general protein synthesis is reduced. Gcn4 translation, however, is increased.
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1)A. how do you read a sequence of DNA (template or non-template strand) to convert it
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Chapter 12 Solutions
Genetics: Analysis and Principles
Ch. 12.1 - 1. Which of the following base sequences is used...Ch. 12.1 - Prob. 2COMQCh. 12.2 - With regard to a promoter, a transcriptional start...Ch. 12.2 - Prob. 2COMQCh. 12.2 - 3. Sigma factor is needed during which stage(s) of...Ch. 12.2 - A uracil-rich sequence occurs at the end of the...Ch. 12.3 - Which RNA polymerase in eukaryotes is responsible...Ch. 12.3 - Prob. 2COMQCh. 12.3 - Prob. 3COMQCh. 12.3 - Prob. 4COMQ
Ch. 12.4 - Which of the following are examples of RNA...Ch. 12.4 - A ribozyme is a. a complex between RNA and a...Ch. 12.4 - Prob. 3COMQCh. 12.4 - Prob. 4COMQCh. 12.5 - 1. Which of the following is not a key difference...Ch. 12 - Prob. 1CONQCh. 12 - Prob. 2CONQCh. 12 - Prob. 3CONQCh. 12 - Prob. 4CONQCh. 12 - 5. Mutations in bacterial promoters may increase...Ch. 12 - Prob. 6CONQCh. 12 - 7. In Chapter 9, we considered the dimensions of...Ch. 12 - 8. A mutation within a gene sequence changes the...Ch. 12 - Prob. 9CONQCh. 12 - At the molecular level, describe how factor...Ch. 12 - Prob. 11CONQCh. 12 - What is the complementarity rule that governs the...Ch. 12 - 13. Describe the movement of the open complex...Ch. 12 - 14. Describe what happens to the chemical bonding...Ch. 12 - Prob. 15CONQCh. 12 - Prob. 16CONQCh. 12 - Prob. 17CONQCh. 12 - Mutations that occur at the end of a gene may...Ch. 12 - If the following RNA polymerases were missing from...Ch. 12 - 20. What sequence elements are found within the...Ch. 12 - 21. For each of the following transcription...Ch. 12 - 22. Describe the allosteric and torpedo models for...Ch. 12 - Which eukaryotic transcription factor(s) shown in...Ch. 12 - 24. The initiation phase of eukaryotic...Ch. 12 - A eukaryotic protein-encoding gene contains two...Ch. 12 - 26. Describe the processing events that occur...Ch. 12 - Prob. 27CONQCh. 12 - Prob. 28CONQCh. 12 - Prob. 29CONQCh. 12 - Prob. 30CONQCh. 12 - 31. In eukaryotes, what types of modifications...Ch. 12 - Prob. 32CONQCh. 12 - Prob. 33CONQCh. 12 - 34. Figure 12.21 shows the products of alternative...Ch. 12 - 35. The processing of ribosomal RNA in eukaryotes...Ch. 12 - Prob. 36CONQCh. 12 - Prob. 37CONQCh. 12 - After the intron (which is in a lariat...Ch. 12 - Prob. 1EQCh. 12 - 2. Chapter 21 describes a technique known as...Ch. 12 - Prob. 3EQCh. 12 - As described in Chapter 21 and in experimental...Ch. 12 - Prob. 5EQCh. 12 - Prob. 6EQCh. 12 - 1. Based on your knowledge of introns and pre-mRNA...Ch. 12 - Discuss the types of RNA transcripts and the...
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- Your investors are concerned that the GasP protein might not be sufficiently produced under normal laboratory conditions. They suggest controlling the transcription of the gasP gene using a chemical that will “trigger” its transcription. a. What type of promoter could be used? b. What chemical will you use to control transcription? c. How does this method of control work?arrow_forwardWhat is the mechanism by which an RNA transcript can be used to silence expression of the same gene? a. What is the name of this mechanism? b. Briefly describe the steps of the process and the two possible fates for the silenced RNA transcript? c. Predict how a transversion in the miRNA sequence would affect this process.arrow_forwardA. Do you have any mature transcripts that show alternative splicing? If so, give an example by naming two transcripts that differ in this way. If your gene does not have this difference, write "no". B. Do you have any transcripts that have an alternative transcription start sites? If so, give an example by naming two transcripts that differ in this way. If your gene does not have this difference, write "no". C. Do you have any transcripts that have an alternative termination sites? If so, give an example by naming two transcripts that differ in this way. If your gene does not have this difference, write "no".arrow_forward
- a. If a single transition occurs in a codon that specifies Phe, what amino acids can be specified by the mutated sequence? b. If a single transversion occurs in a codon that specifies Phe, what amino acids can be specified by the mutated sequence? c. If a single transition occurs in a codon that specifies Leu, what amino acids can be specified by the mutated sequence? d. If a single transversion occurs in a codon that specifies Leu, what amino acids can be specified by the mutated sequence?arrow_forwardHow would each of the following types of mutations affect proteinfunction or the amount of functional protein that is expressed froma gene?A. Nonsense mutationB. Missense mutationC. Up promoter mutationD. Mutation that affects splicingarrow_forwarda. In your claim words, depict the contrast between ρ-dependent and ρ-independent end of translation in prokaryotes. b. If you have a given amino acid, can you be able to identify its RNA? Why or why not? c. How does mutation can affect the central dogma and the phenotype?arrow_forward
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