Essentials Of Genetics (9th Global Edition)
9th Edition
ISBN: 9780134143637
Author: William S. Klug, Michael R. Cummings
Publisher: Pearson Global Edition
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Chapter 17, Problem 22PDQ
When disrupting a mouse gene by knockout, why is it desirable to breed mice until offspring homozygous (–/–) for the knockout target gene are obtained?
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The goal of the Knockout Mouse Project is to generate a set of ES cell lines, each with a knockout mutation in a single gene, that collectively contains amutation in every gene in the mouse genome.a. Do you think that it will be possible, for everygene, to generate a heterozygous knockout ES cellline? Explain.b. Do you think that for every heterozygous knockoutES cell line, it will be possible to generate a heterozygous knockout mouse? Explain.c. In fact, investigators failed in their attempts to generate ES cell knockouts for the Fam gene describedin Problem 5. How could these researchers use EScell technology to determine whether Fam is required for eye development in the mouse? Diagrama construct that the researchers could introduceinto ES cells to explore this issue.d. Describe various outcomes that might be obtainedfrom the experiment in part (c) and what you couldconclude in each case.
Chapter 17 Solutions
Essentials Of Genetics (9th Global Edition)
Ch. 17 -
CASE STUDY |Should we worry about recombinant DNA...Ch. 17 - Prob. 2CSCh. 17 - Prob. 3CSCh. 17 -
HOW DO WE KNOW?
1. In this chapter we focused on...Ch. 17 - Prob. 2PDQCh. 17 - What roles do restriction enzymes, vectors, and...Ch. 17 - Prob. 4PDQCh. 17 - Prob. 5PDQCh. 17 - Prob. 6PDQCh. 17 - Prob. 7PDQ
Ch. 17 - List the advantages and disadvantages of using...Ch. 17 - What are the advantages of using a restriction...Ch. 17 - The introduction of genes into plants is a common...Ch. 17 - Prob. 11PDQCh. 17 - Prob. 12PDQCh. 17 - Prob. 13PDQCh. 17 - What advantages do cDNA libraries provide over...Ch. 17 - Prob. 15PDQCh. 17 -
16. List the steps involved in screening a...Ch. 17 -
17. In a typical PCR reaction, describe what is...Ch. 17 -
18. We usually think of enzymes as being most...Ch. 17 - How are dideoxynucleotides (ddNTPs) structurally...Ch. 17 - Prob. 20PDQCh. 17 - One complication of making a transgenic animal is...Ch. 17 -
22. When disrupting a mouse gene by knockout, why...Ch. 17 - Prob. 23PDQ
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- During construction of a knockout mouse, a targeting vector is introduced into mouse embryonic cells, where it integrates into the genome at a ["targeted site", "random location"] by ["homologous recombination", "nonhomologous end joining "] . Pick answers within quotation marks to fill in the blanks.arrow_forwardGeneticists often use ethylmethane sulfonate (EMS) to induce mutations in Drosophila. Why is EMS a mutagen of choice for genetic research? What would be the effects of EMS in a strain of Drosophila lacking functional mismatch repair systems?arrow_forward. In selecting target cells to receive a transferred gene in gene therapy in an adult person, what factors do you think would have to be taken into account for a successful treatment?arrow_forward
- A conditional mutation when there is an alteration to the coding region of a gene is caused by? Base addition X-ray exposure Gene deletion Vaping Tautomeric shift??arrow_forwardWhat is double-knockout animals (DKOs) ?arrow_forwardMutations outside the coding sequences can modify geneexpression by altering the amount, time, or place of__________ production.?arrow_forward
- Describe how the Ames test screens for potential environmental mutagens. Why is it thought that a compound that tests positively in the Ames test may also be carcinogenic?arrow_forwardThe ability to selectively modify the genome in the mouse has revolutionized mouse genetics. Outline the procedure for generating a knockout mouse at a specific genetic locus. How can the loxP-Cre system be used to conditionally knock out a gene? What is an important medical application of knockout mice?arrow_forwardWhy are knockout mice called that?arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY