Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 11, Problem 9P
Describe the purpose of the Ames test. How are
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What is the Ames test and how is it carried out? What assumption concerning mutagenicity and carcinogenicity is it based upon?
Explain in detail the AMES test which is used to test for the mutagenic potential of different compounds. Include an explanation of the AMES tester strains and how they work, why the liver is essential to this test and specifically why the control plate is necessary.
Explain the Triplet Binding Assay ?
Chapter 11 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 11 - 11.1 Identify two general ways chemical mutagens...Ch. 11 - 11.2 Nitrous acid and (BU) alter DNA by different...Ch. 11 - 11.3 What is the difference between a transition...Ch. 11 - What is the difference between a synonymous...Ch. 11 - 11.5 UV irradiation causes damage to bacterial...Ch. 11 - Ultraviolet (UV) radiation is mutagenic.
What...Ch. 11 - Researchers interested in studying mutation and...Ch. 11 - The effect of base - pair substitution mutations...Ch. 11 - Describe the purpose of the Ames test. How are...Ch. 11 - 11.10 In numerous population studies of...
Ch. 11 - 11.11 Two different mutations are identified in a...Ch. 11 - What is the phenotype effect of inserting a Ds...Ch. 11 - 11.13 Answer the following questions concerning...Ch. 11 - Several types of mutation are identified and...Ch. 11 - 11.15 A sample of the bacterium is exposed to...Ch. 11 - 11.16 A strain of is identified as having a null...Ch. 11 - Describe the difference between DNA transposons...Ch. 11 - 11.18 How are flanking direct repeat sequences...Ch. 11 - 11.19 Using the adeninethymine base pair in this...Ch. 11 - The partial amino acid sequence of a wild-type...Ch. 11 - Prob. 21PCh. 11 - 11.22 Many human genes are known to have homologs...Ch. 11 - The fluctuation test performed by Luria and...Ch. 11 - In this chapter, three features of genes or of DNA...Ch. 11 - Briefly compare the production of DNA double -...Ch. 11 - During mismatch repair, why is it necessary to...Ch. 11 - 11.27 Following the spill of a mixture of...Ch. 11 - 11.28 In an Ames test using Salmonella bacteria a...Ch. 11 - A wild - type culture of haploid yeast is exposed...Ch. 11 - A fragment of a wild - type polypeptide is...Ch. 11 - Prob. 31PCh. 11 - Alkaptonuria is a human autosomal recessive...Ch. 11 - 11.33 In an experiment employing the methods of...Ch. 11 - Using your knowledge of DNA repair pathways choose...Ch. 11 - 11.35 Ataxia telangiectasia is a human inherited...Ch. 11 - A geneticist searching for mutations uses the...Ch. 11 - 11.37 In a mousebreeding experiment a new mutation...Ch. 11 - 11.38 Considering the Dumbo mutation in a Problem,...Ch. 11 - 11.39 Thinking back to the discussion of...Ch. 11 - 11.40 Common baker’s yeast () is normally grown at...Ch. 11 - 11.41 The two gels illustrated below contain...
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- What detection method could be used to determine the Mutation at a palindromic site and what results could be achieved from that?arrow_forwardWhat is linker scanning mutagenesis?arrow_forwardWhat assay uses the fact that activators can be separated into DNA binding and activating domains? What information do you gain from this assay? Describe briefly how to perform this assay.arrow_forward
- How would you modify the Ames test to evaluate physical mutagens?Would it be necessary to add the rat liver extract? Explain why or why not.arrow_forwardWhat is the purpose of Southern's blotting technique? Explain in detail the biochemical principle that underpin each step of the method.arrow_forwardSalmonella strains developed for the Ames test contain many special phenotypes that make them more useful for these techniques. Many of these phenotypes, including UvrA and rfa, make these strains mutate more easily, and therefore make the assays more sensitive. In 1-2 sentences each, state how the UvrA and rfa phenotypes make Ames test strains more sensitive to mutations.arrow_forward
- Elaborate on three (3) lysis methods used to disrupt bacterial cells. During DNA isolation using P: C: I technique, a precipitation step is required. What is the purpose of this step? How can sodium acetate and ethanol facilitate the precipitation step in DNA isolation?arrow_forwardWhat is the cotransduction coefficient of histidine and valine? For consistency, standardize on histidine. In E. coli, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. Genotype of recipient Number of wild-type colonies Genotype of recipient Number of wild-type colonies his- arg+ val+ tyr+ 254 his+ arg- val- tyr+ 132 his+ arg+ val- tyr- 36 his+ arg- val+ tyr+ 240 his- arg- val+ tyr+ 28 his- arg+ val- tyr+ 102 his- arg+ val+ tyr- 100 his+ arg- val+ tyr- 2 What is the cotransduction coefficient of histidine and valine? For consistency, standardize on histidine. 0.38 0.537 0.402 None of thesearrow_forwardWhat are DNA probes Describe three (3) methods that can be used to label DNA probes Describe 2 methods for detection of the hybridized probe List the advantages of using non-radioactively labeled probes vs radioactively labeled probes.arrow_forward
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