Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 20, Problem 28PDQ
As you will learn later in the text (Special Topics Chapter 1–CRISPR-Cas and Genome Editing), the CRISPR-Cas system has great potential but also raises many ethical issues about its potential applications because theoretically it can be used to edit any gene in the genome. What do you think are some of the concerns about the use of CRISPR-Cas on humans? Should CRISPR-Cas applications be limited for use on only certain human genes but not others? Explain your answers.
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t is possible to buy a CRISPR kit that you can do in your own home. Is this a good idea? After watching the two CRISPR videos answer the following questions in your post. When is a gene editing technology safe and effective enough to be used outside of the laboratory? How do we balance risks and benefits appropriately? How far should we go in altering the future genetic landscape of free-living species, including humans? And importantly, who should decide such issues?
A number of advances have been made in biotechnology. CRISPR/Cas9 one of the most controversial, and has had a lot of media attention in recent years. It is a method by which scientists can precisely edit DNA sequences at exact locations. Benefits obviously include the potential to “repair” mutated genes that cause disease. In fact, preliminary results from one of the earliest clinical trials of CRISPR/Cas9 provide evidence that the technique is safe and feasible to use for treating human diseases. What other potential applications of this application do you see (you can use any organisms to illustrate your answer)? What are the potential dangers or downsides of using this technology? Do you think this technology should be used in gene editing in humans? Explain your stance.
Where did the Crispr system first originate and what is its purpose in nature? What is the advantage to using the CRISPR-Cas9 system compared to previous gene editing technologies? What are the advantages? Any drawbacks? What are the ethicals concerns that are raised with the use and application of this technology? What do you think of this technology?
Chapter 20 Solutions
Concepts of Genetics (12th Edition)
Ch. 20 - A plasmid that is both ampicillin and tetracycline...Ch. 20 - You have just created the worlds first genomic...Ch. 20 - What undesirable or unforeseen consequences might...Ch. 20 - Do we have the ethical right to alter the genomes...Ch. 20 - Should these new technologies be regulated...Ch. 20 - HOW DO WE KNOW? In this chapter we focused on how...Ch. 20 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 20 - What roles do restriction enzymes, vectors, and...Ch. 20 - The human insulin gene contains a number of...Ch. 20 - Although many cloning applications involve...
Ch. 20 - Using DNA sequencing on a cloned DNA segment, you...Ch. 20 - Restriction sites are palindromic; that is, they...Ch. 20 - List the advantages and disadvantages of using...Ch. 20 - What are the advantages of using a restriction...Ch. 20 - In 1975, the Asilomar Conference on Recombinant...Ch. 20 - In the context of recombinant DNA technology, of...Ch. 20 - If you performed a PCR experiment starting with...Ch. 20 - Prob. 13PDQCh. 20 - Prob. 14PDQCh. 20 - You have recovered a cloned DNA segment from a...Ch. 20 - Prob. 16PDQCh. 20 - Although the capture and trading of great apes has...Ch. 20 - Prob. 18PDQCh. 20 - Prob. 19PDQCh. 20 - Prob. 20PDQCh. 20 - Traditional Sanger sequencing has largely been...Ch. 20 - How is fluorescent in situ hybridization (FISH)...Ch. 20 - What is the difference between a knockout animal...Ch. 20 - Prob. 24PDQCh. 20 - When disrupting a mouse gene by knockout, why is...Ch. 20 - Prob. 26PDQCh. 20 - Prob. 27PDQCh. 20 - As you will learn later in the text (Special...Ch. 20 - The gel presented here shows the pattern of bands...Ch. 20 - A widely used method for calculating the annealing...Ch. 20 - Most of the techniques described in this chapter...Ch. 20 - In humans, congenital heart disease is a common...Ch. 20 - The U.S. Department of Justice has established a...Ch. 20 - Prob. 34ESP
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- You need to complete the following steps for an experiment. Explain whether an acrylamide gel or an agarose gel is more appropriate to use for the following experiments. Purifying tRNA from total RNA Isolating a vector insert for cloning Analyzing PCR productsarrow_forwardWhat advantages do cDNA libraries provide over genomic DNA libraries? Describe cloning applications where the use of a genomic library is necessary to provide information that a cDNA library cannot.arrow_forward1. MEGA works differently than traditional CRISPR technology by targeting mRNA and NOT DNA sequences 2. MEGA is more specific and safer than traditional CRISPR technology, making it a novel and useful tool for gene editing purposes 3. MEGA may be suited as a possible strategy to enhance gene therapy approaches for patients with genetic disease such as blood cancersarrow_forward
- Which of the following statements is not true about the guide RNA (see this interactive demonstration for help with this question: https://www.biointeractive.org/classroom-resources/crispr-cas9-mechanism-applications) Group of answer choices it contains a sequence of 20 nucleotides that matches a specific sequence in a cell’s DNA When the guide RNA is combined with Cas9, it will guide Cas9 to the target sequence its target sequence can be almost any sequence as long as it occurs near a PAM motif it is a nuclease, a type of enzyme that cleaves DNAarrow_forwardIf a researcher wanted to utilize CRISPR/Cas9 to target a gene of interest in their experimental system (i.e. Drosophila) which of the following would they customize for this purpose Group of answer choices Guiding region of sgRNA None of the above, CRISPR can only function in bacterial cells Cas9 enzyme Scaffold region of sgRNAarrow_forwardYou are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forward
- You are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forwardYou are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forwardYou are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forward
- You are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forwardYou are employed in a gene therapy laboratory to test the effectiveness of a vector for correcting the DF508 –CFTR mutation. The vector uses CRISPR –CAS9 genome editing to correct the mutated gene in situ (CFTR-CRISPR). An Ussing chamber experiment was performed using nasal airway cells obtained from a patient with the DF508 CFTR mutation which were transformed with either a control vector consisting of an inert CRISPR-CAS-9 construct (CONTROL) or the active, gene correcting CRISPR CAS-9 construct (CFTR-CRISPR). The following transepithelial voltage values were obtained for the drug regimen shown under open circuit and current clamp (injected current of 10mA) conditions: CONTROL Baseline Amiloride Forskolin Inh172 Vte (mV) -78 -2 -4 -3 DVRt (mV) 8 16 7.5 13 R (W.cm-2) 800 1600 750 1300 I (mA.cm-2) 98 1 5 2 CFTR-CRISPR Vte (mV) -38 -6 -23 -9 DVRt (mV) 9 27 6 11 R (W.cm-2) 900 2700 600…arrow_forwardAre you in favor of OR against human genetic editing? Do you believe that there are appropriate uses, BUT limitations for human genetic editing? Who should determine the uses, if any, of human genetic editing?arrow_forward
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