Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 17, Problem 4EQ
As described in Chapter 21, the CRISPR-Cas system has been modified so it can be used as a gene mutagenesis tool (look ahead to Figure 21.13). Describe how the gene mutagenesis tool works, and explain how the natural CRISPR-Cas system is altered to produce this tool.
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Now that you understand how the CRISPR-Cas9 system works, think back to the experiments discussed in the introduction to this chapter, in which researchers used CRISPR-Cas9 genome editing to treat mice with Duchenne muscular dystrophy. Why did the researchers choose to cut out the entire exon 23 in the mice with the disorder? Why not replace the specific mutation using a donor piece of DNA and homologous recombination? Propose some possible explanations.
What are the major components of the CRISPR-Cas9 system? What mechanism does it employ to combine DNA? Explain the process of how the CRISP-Cas9 system is able to create recombinant DNA. Relate the idea of gene modification to the fields of vaccines and applied microbiology as well.
Early gene-cloning experiments involved insertion at one restriction site in the vector; for example, the insert would have an EcoRI site at each end, and the vector would be opened at an EcoRI site prior to ligation. Under what circumstances would asymmetric cloning be desirable, with the insert having a different restriction site at each end
Chapter 17 Solutions
Genetics: Analysis and Principles
Ch. 17.1 - Which of the following can bind to ncRNAs? a. DNA...Ch. 17.1 - 2. When an ncRNA functions as a decoy, it
a....Ch. 17.1 - Prob. 3COMQCh. 17.2 - 1. Which of the following functions does HOTAIR...Ch. 17.3 - 1. The process of RNA interference may lead to
a....Ch. 17.3 - 2. In catalyzing the methylation or...Ch. 17.4 - 1. Which of the following is a function of SRP?...Ch. 17.5 - 1. Which of the following components are needed...Ch. 17.5 - 2. In the CRISPR-Cas system, what does the...Ch. 17.5 - Which of the following is a function of the...
Ch. 17.6 - Prob. 1COMQCh. 17.6 - Let's suppose that the overexpression of a...Ch. 17 - 1. List and briefly describe four types of...Ch. 17 - 2. An ncRNA may have the following functions:...Ch. 17 - 3. What is meant by the term RNA world? Describe...Ch. 17 - Explain how HOTAIR plays a role in the...Ch. 17 - What is the phenomenon of RNA interference (RNAi)?...Ch. 17 - With regard to RNAi, what are three possible...Ch. 17 - 7. What is the difference between an miRNA and an...Ch. 17 - Together with a specific set of proteins, snoRNAs...Ch. 17 - Describe the structure of SRP in eukaryotes, and...Ch. 17 - Look at Figure 17.6 and predict what would happen...Ch. 17 - Compare and contrast the roles of crRNA and...Ch. 17 - In the CRISPR-Cas system, does the tracrRNA act as...Ch. 17 - Prob. 13CONQCh. 17 - Outline the steps that occur when piRISCs silence...Ch. 17 - List five types of cancer in which ncRNAs can be...Ch. 17 - Prob. 16CONQCh. 17 - A protein called trypsin, which plays a role in...Ch. 17 - Prob. 2EQCh. 17 - Prob. 3EQCh. 17 - As described in Chapter 21, the CRISPR-Cas system...Ch. 17 - Prob. 5EQCh. 17 - Prob. 6EQCh. 17 - Prob. 1QSDCCh. 17 - Go to the PubMed website and do a search using the...
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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
- Describe the process of cloning a DNA fragment into theBamHI and PstI sites of the vector pUC18. How would youscreen for clones that contain an insert? and explain the process(steps) by drawingarrow_forwardExplain How Single-nucleotide mutations can be introduced into the genome using an engineered CRISPR-Cas9 system.arrow_forwardList three possible uses of site-directed mutagenesisarrow_forward
- i) Suppose we want to insert the GFP sequence after the promoter of a gene X to create a fusion protein. Please describe the strategy that you will follow to edit this gene with CRISPR-Cas9 technology, in order to visualize the expression of gene X in live cells. (ii) Please explain how a knockout mouse for a gene X can be produced with CRISPR-Cas9 technologyarrow_forwardDoes one have a practical idea of the role of CRISPR/Cas9 in genome editing via cutting of DNA?arrow_forwardWhat are CRISPR-associated (cas) genes ?arrow_forward
- Attached is a cartoon model of the CRISPR system, with 3 critical components labeled. A. What is the identity of each component? B. What is the function of component a? C. What is the function of component c?arrow_forwardwhat are BIOLOGICAL IMPLICATIONS OF CRISPR-CAS9?arrow_forwardTwo approaches for correcting single-gene defects are gene therapy such as is discussed in Section 3-5D and the CRISPR–Cas9 system. Explain why the CRISPR–Cas9 approach can potentially provide more complete restoration of normal tissue function than gene therapy.arrow_forward
- Consider the following human genetic diseases: hemophilia, Down syndrome, cystic fibrosis, and brain cancer. Which are the best candidates for treatment with CRISPR-Cas genome editing, and which have the largest hurdles to overcome? Why?arrow_forwardWhy was the type II CRISPR-Cas9 system of S. pyogenes selected by several scientists as a model to learn how the CRISPR-Cas mechanism works?arrow_forwardwhat are the advantages and disadvantages of CRISPR cas9 technology?arrow_forward
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