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 14, Problem 2CONQ
In general, why is it important to regulate genes? Discuss examples of situations in which it would be advantageous for a bacterial cell to regulate genes.
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i)Describe attenuation control and how it is used to regulate gene expression.
ii)Give a specific example of how this works?
iii)Could this be used in eukaryotes? why ?or why not?
Provide a detailed description of gene expression and control in prokaryotes. Provide a detailed description of proteins critical for this process. (please hand draw a figure showing gene expression and control in prokaryotes and the proteins involved)
Choose all of the statements that describe the benefits of combinatorial control of transcription in a eukaryotic
multi-cellular organism.
An operon is able to initiate transcription.
RNA polymerase has selective access to specific genes for tissue specific effects.
RNA reverts to DNA prior to transcription.
mRNA synthesis occurs at an accelerated rate.
Chapter 14 Solutions
Genetics: Analysis and Principles
Ch. 14.1 - 1. A repressor is a __________ that _________...Ch. 14.1 - 2. Which of the following combinations will cause...Ch. 14.2 - 1. What is an operon?
a. A site in the DNA where...Ch. 14.2 - The binding of _______ to lac repressor causes lac...Ch. 14.2 - Prob. 3COMQCh. 14.2 - How does exposing an E. coli cell to glucose...Ch. 14.3 - When tryptophan binds to trp repressor, this...Ch. 14.3 - During attenuation, when tryptophan levels are...Ch. 14.3 - Operons involved with the biosynthesis of...Ch. 14.4 - 1. Translation can be regulated by
a....
Ch. 14.4 - Prob. 2COMQCh. 14.5 - 1. For a riboswitch that controls transcription,...Ch. 14 - 1. What is the difference between a constitutive...Ch. 14 - In general, why is it important to regulate genes?...Ch. 14 - Prob. 3CONQCh. 14 - Transcriptional regulation often involves a...Ch. 14 - An operon is repressible-a small effector molecule...Ch. 14 - Prob. 6CONQCh. 14 - 7. What is enzyme adaptation? From a genetic point...Ch. 14 - Prob. 8CONQCh. 14 - Prob. 9CONQCh. 14 - Prob. 10CONQCh. 14 - Mutations may have an effect on the expression of...Ch. 14 - 12. Would a mutation that inactivated lac...Ch. 14 - Prob. 13CONQCh. 14 - 14. As shown in Figure 14.12, four regions within...Ch. 14 - 15. As described in Chapter 13, enzymes known as...Ch. 14 - 16. The combination of a 3–4 stem-loop and a...Ch. 14 - 17. Mutations in tRNA genes can create tRNAs that...Ch. 14 - Prob. 18CONQCh. 14 - Prob. 19CONQCh. 14 - A species of bacteria can synthesize the amino...Ch. 14 - 21. Using three examples, describe how allosteric...Ch. 14 - How are the actions of lac repressor and trp...Ch. 14 - 23. Transcriptional repressor proteins (e.g., lac...Ch. 14 - Answer the following questions that pertain to the...Ch. 14 - Chapter 21 describes a blotting method known as...Ch. 14 - As described in experimental question E2 and also...Ch. 14 - Prob. 4EQCh. 14 - Explain how the data shown in Figure 14.9 indicate...Ch. 14 - Prob. 6EQCh. 14 - Lets suppose you have isolated a mutant strain of...Ch. 14 - Prob. 1QSDCCh. 14 - Prob. 2QSDC
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- a)Describe the process of transcription in prokaryotes b) Explain how proteins can be targeted for specific sites within the cellarrow_forwardA) List the steps for gene expression in prokaryotes and eukaryotes. B) Relate the differences in gene expression between prokaryotes and eukaryotes in gene expression regulation and explain what causes those differences.arrow_forwardPlease give one observation of the genetic code that indicates it minimizes the harmful effects of single base change mutations?arrow_forward
- List some important differences between bacterial and eukaryotic cells that affect the way in which genes are regulated.arrow_forwardWhich of the following statements about the attempt to express a eukaryotic gene in bacteria is TRUE? Choose an answer below: The eukaryotic promoter will function in the bacterial cells. The transcript will be capped. Expression of the gene will always yield a functional protein. The stop codon of the eukaryotic gene will function in the bacterial cells. The transcript will be spliced the same way as in eukaryotic cells.arrow_forwardWhat are the role of transcription proteins? Explain briefly at your own wordsarrow_forward
- Could someone please give me a technical description of how the chemotaxis systems work in gene regulation? Thank youarrow_forwardA cell has a mutated mediator protein. a) How will this affect transcription of genes? (circle an answer below) No transcription Weak transcription will occur Strong transcription will occur b) Why? Describe your choice abovearrow_forwardWhat is the difference between a constitutive gene and a regulated gene?arrow_forward
- In lac operon, both gene A and gene B undergo a transcription process. Gene B can only undergo transcription in the presence of lactose and in the absence of glucose. The product of gene A is often altered by an inducer. Which of the following is true about genes A and B? Select one: a. Gene A= structural gene; Gene B= regulatory gene b. Gene A= regulatory gene; Gene B= structural gene c. Gene A= promoter gene; Gene B= operator gene d. Gene A= lacZ gene; Gene B= promoter genearrow_forwardDescribe how one might determine which proteins in E.coli are repressed when a culture is shifted from a minimal medium to a rich medium containing many amino acids, bases and vitamins. How might one study which genes are expressed during each growth condition?arrow_forwarda) Define the term gene expression b) State 4 difference between prokaryotes and eukaryotes gene expression c) state the importance of regulating gene expressionarrow_forward
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