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 20, Problem 3CONQ
Which steps in the double-strand break model for recombination would be inhibited if the following proteins were missing? Explain the function of each protein required for the step that is inhibited.
A. RecBCD
B. RecA
C. RecG
D. RuvABC
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Chapter 20 Solutions
Genetics: Analysis and Principles
Ch. 20.1 - 1. Homologous recombination refers to the exchange...Ch. 20.1 - During the molecular process of homologous...Ch. 20.1 - 3. A key difference between the original Holliday...Ch. 20.1 - Which of the following mechanisms can cause gene...Ch. 20.2 - 1. During site-specific recombination that occurs...Ch. 20.2 - Prob. 2COMQCh. 20.3 - Which of the following types of transposable...Ch. 20.3 - Prob. 2COMQCh. 20.3 - Prob. 3COMQCh. 20 - 1. Describe the similarities and differences...
Ch. 20 - Prob. 2CONQCh. 20 - 3. Which steps in the double-strand break model...Ch. 20 - Prob. 4CONQCh. 20 - Prob. 5CONQCh. 20 - Prob. 6CONQCh. 20 - Prob. 7CONQCh. 20 - 8. What is gene conversion?
Ch. 20 - Make a list of the differences between the...Ch. 20 - Prob. 10CONQCh. 20 - Prob. 11CONQCh. 20 - 12. According to the double-strand break model,...Ch. 20 - What type of DNA structure is recognized by RecG...Ch. 20 - Briefly describe three ways that antibody...Ch. 20 - 15. Describe the functions of the RAG1 and RAG2...Ch. 20 - According to the scenario shown in Figure 20.7,...Ch. 20 - Prob. 17CONQCh. 20 - Prob. 18CONQCh. 20 - 19. Why does transposition always produce direct...Ch. 20 - 20. Which types of TEs have the greatest potential...Ch. 20 - Prob. 21CONQCh. 20 - 22. Let’s suppose that a species of mosquito has...Ch. 20 - This chapter describes different types of TEs,...Ch. 20 - Prob. 24CONQCh. 20 - Prob. 25CONQCh. 20 - 26. What is the difference between an autonomous...Ch. 20 - 1. Briefly explain how McClintock determined that...Ch. 20 - The work of McClintock showed that the presence of...Ch. 20 - 3. In your own words, explain the term transposon...Ch. 20 - Prob. 4EQCh. 20 - 5. Gerald Rubin and Allan Spradling devised a...Ch. 20 - Make a list of the similarities and differences...Ch. 20 - Prob. 2QSDCCh. 20 - Prob. 3QSDC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How does the synthesis-dependent strand-annealing model differ from the double-strand break model of homologous recombination? a. The product is always noncrossover. b. There is no second strand capture. c. No Holliday junctions are formed. d. The strand in the D loop is displaced. e. All of these are correct.arrow_forwardWhich of the following molecules helps relieve the tension of unwinding parental DNA strands, by breaking DNA and rejoining it before it is replicated? a. Primase b. Single-stranded binding proteins c. Helicase d. Topoisomerasearrow_forwardIn the following drawing, the top strand is the template DNA, and the bottom strand shows the lagging strand prior to the action of DNA polymerase I. The lagging strand contains three Okazaki fragments. The RNA primers have not yet been removed. A. Which Okazaki fragment was made first, the one on the left or the one on the right? B. Which RNA primer will be the first one to be removed by DNA polymerase I, the primer on the left or the primer on the right? For this primer to be removed by DNA polymerase I and for the gap to be filled in, is it necessary for the Okazaki fragment in the middle to have already been synthesized? Explain. C. Let’s consider how DNA ligase connects the left Okazaki fragment with the middle Okazaki fragment. After DNA polymerase I removes the middle RNA primer and fills in the gap with DNA, where does DNA ligase function? See the arrows on either side of the middle RNA primer. Is ligase needed at the left arrow, at the right arrow, or both?arrow_forward
- Which of the following statements is TRUE concerning the synthesis of the leading and lagging strands of DNA in prokaryotic cells? a. O b. The leading strand is synthesized by one polymerase III continuously, and the lagging strand is synthesized by several molecules of DNA polymerase III. d. The leading and lagging strands are synthesized at the same time by the one DNA polymerase I. O c. The leading and lagging strands are synthesized at the same time by the one DNA polymerase III. The leading strand is synthesized by one polymerase III, and the lagging strand is synthesized by DNA polymerase I.arrow_forwardExplain how DNA polymerase and topoisomerase 2 contribute to replication in E.coli and what is the role of the role of the metal ions in the polymerase activity. B)How does the use of an RNA primer rather than a DNA primer affect the fidelity of DNA replication in E.coli?arrow_forwardWhich of the following is NOT TRUE about replication? A. Polynucleotides are made up of deoxynucleotide monophosphates but the substrates are deoxynucleotide triphosphates B. The mechanism of the reaction is nucleophilic addition C. In the formation of primers, nucleotides are added in any direction D. Both nucleotide triphosphates and deoxynucleotide triphosphates are substrates in replication E. Direction of synthesis is 5'23' and lengthens unidirectionally relative to the double strand.arrow_forward
- Define the following terms: a. processivity b. replisome c. exonuclease d. DNA ligase e. repliconarrow_forwardDescribe three examples of specific recombinases that have been discussed in this class. Include a brief description for the function of each specific recombinase.arrow_forwardIn each of the illustrations below, a segment of a chromosome has two copies of a transposable element. In panel a, they are oriented in the same direction, whereas in panel b they are in opposite directions. A double strand break occurs in element A and is repaired by homologous recombination using element B as a repair template. For each case, what will the chromosome look like after homologous recombination occurs? Choose one of the five options below, 1-5.arrow_forward
- You used agarose gel electrophoresis to separate DNA fragments of different size and the experiment worked well. However, you wanted to re run the experiment but this time you made the gel with a higher percentage of Agarose. How might this affect your results compared to the first run? a. There would be no difference between the runs since it is the current, not the agarose that causes migration. b. The higher concentration of agarose would cause the DNA to break apart. c. You can't predict how the concetration of agarose would affect migration. d. The DNA fragments would migrate further down the gel than they did the first time. e. The DNA fragments wouldn't migrate as far down the gel as they did the first time.arrow_forwardYou are studying a colony of cells and determine that some of these cells have a mutated DNA polymerase I that results in loss of function of this enzyme. A) What will the effect of the mutation in DNA polymerase I be on DNA replication? In your answer make sure to describe what would be observed in the leading and lagging strand and explain your reasoning. B) Will this mutation in DNA polymerase I have an impact on another step in DNA replication? In your answer make sure to indicate whether DNA replication will be impacted or not. If it is not, explain why. If it is impacted, then describe the step that is impacted and name the molecule or enzyme involved.arrow_forwardIn Semi conservative replication: A. After one round of replication of a single molecule of DNA, one DNA molecule will be produced that contains two parental strands of DNA and one DNA molecule will be produced that contains two new (or de novo) strands. B. After one round of replication of a single molecule of DNA, two resulting DNA molecules will be produced both of which contain a mix of both parental and new DNA interspersed on every strand of DNA C. After two rounds of replication of a single molecule of DNA, two resulting DNA molecules will contain both a parental strand and a new strand of DNA and the other two resulting DNA molecules will contain all new (or de novo) DNA D. After two rounds of replication of a single molecule of DNA, one resulting DNA molecule will contain 2 parental strands of DNA and the other three resulting DNA molecules will contain all new (or de novo) DNA E. A and C F. B and Darrow_forward
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