Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 14, Problem 21CONQ
Using three examples, describe how allosteric sites are important in the function of genetic regulatory proteins.
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ATM is a kinase that phosphorylates histone H2AX in response to double-stranded DNA breaks. Which of the following scenarios would most quickly regulate ATM activity in the cell?
a) Adding silencing methyl groups to cytosines in the Atm gene
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d) Activating an E3 ubiquitin ligase specific for the ATM protein
Consider the CT/CGRP example of alternative splicing. Which different types of alternative splicing patterns are represented?
Give examples of structural motifs found in transcription factors that interact with other proteins instead of DNA.
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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- Describe three ways that the function of a regulatory transcription factor can be modulated.arrow_forwardDescribe the basic models of transcription factor families, the two transcription factors each representing these models, and how they function molecularly by specifying some of their functions.arrow_forwardConsider the mechanism of the enzyme RNase: What would happen to the Km (i.e., would it increase, decrease, or stay the same) if the his12 was mutated to a lysine? Explain. What would happen to the Kcat (i.e., would it increase, decrease, or stay the same) if the his12 was mutated to a valine? Explain.arrow_forward
- Briefly describe the significance of regulatory factors in transcription process. Why the promoter is called an essential regulatory element.arrow_forwardDescribe alternating splicing and its biological significance with a specific example.arrow_forwardGenes can be transcribed into mRNA, in the case of protein coding genes, or into RNA, in the case of genes such as those that encode ribosomal or transfer RNAs. Define a gene. For the following characteristics, state whether they apply to (a) continuous, (b) simple, or (c) complex transcription units.i. Found in eukaryotesii. Contain intronsiii. Capable of making only a single protein from a given genearrow_forward
- Name two similarities and two differences between the cellular processes of importing protien into the ER and importing protein to the nucleus.arrow_forwardWith examples explain the importance of Non-coding ribonucleic acid interference in regards to gene expression?arrow_forwardTranscriptionally active chromatin are generally found near the outer regions of the nucleus near the membrane. true or false?arrow_forward
- Give typed explanation Use the diagram representing the typical steps in gene expression and protein formation to respond. All of the following help the cell regulate gene expression during Step 2 of protein formationexcepta)general factors that are required for the RNA polymerase to bind to the promoter.b)repressors binding to the operator preventing the RNA polymerase from progressing.c)specialty factors binding to the RNA polymerase, altering its specificity.d)tRNA that binds to the RNA polymerase in the presence of complementary mRNA.arrow_forwardDiscuss the following argument: “if the expression of every gene depends on a set of transcription regulators, then the expression of these regulators must also depend on the expression of other regulators, and their expression must depend on the expression of still other regulators, and so on. cells would therefore need an infinite number of genes, most of which would code for transcription regulators.” how does the cell get by without having to achieve the impossible?arrow_forwardName four major classes of DNA-binding proteins that are responsible for controlling transcription, and describe their structural features.arrow_forward
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