Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 19, Problem 3EQ
From an experimental point of view, is it better to use haploid or diploid organisms for mutagen testing? Consider the Ames test when preparing your answer.
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Answer each of the following questions correctly.(2-5 sentences only)(DO NOT USE THE EXAMPLE I PROVIDED FOR YOUR ANSWER(
A. How cloning and expression of certain genes allows for massive production of the desired product.(Give an specific example, AGAIN PLEASE DO NOT USE THIS EXAMPLE AS YOUR EXAMPLE FOR MY QUESTION. YOU ARE NOT ALLOWED TO COPY AND PASTE MY EXAMPLE FOR YOUR ANSWER. PLEASE PROVIDE ANOTHER EXAMPLE .DO NOT USE MY EXAMPLE)
For example: the cloning and expression of insulin in bacteria allows for the mass production of this necessary protein for use by diabetic patients.
The enzymes mentioned below are used as tools during cloning, DNA sequencing and/or gene therapy. Explain what they are used for. Also mention the actual biological function of the respective enzymes.
1) RNaseH
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.
Chapter 19 Solutions
Genetics: Analysis and Principles
Ch. 19.1 - 1. A mutation changes a codon that specifies...Ch. 19.1 - A down promoter mutation causes the promoter of a...Ch. 19.1 - 3. A mutation in one gene that reverses the...Ch. 19.1 - Which of the following is an example of a somatic...Ch. 19.2 - Prob. 1COMQCh. 19.3 - Which of the following is not an example of a...Ch. 19.3 - A point mutation could be caused by a....Ch. 19.3 - One way that TNRE may occur involves the formation...Ch. 19.4 - Nitrous acid replaces amino groups with keto...Ch. 19.4 - Prob. 2COMQ
Ch. 19.4 - Prob. 3COMQCh. 19.5 - The function of photolyase is to repair a....Ch. 19.5 - Which of the following DNA repair systems may...Ch. 19.5 - 3. In nucleotide excision repair in E. coli, the...Ch. 19.5 - Prob. 4COMQCh. 19.5 - An advantage of translesion-replicating...Ch. 19 - Is each of the following mutations a transition,...Ch. 19 - Prob. 2CONQCh. 19 - What does a suppressor mutation suppress? What is...Ch. 19 - Prob. 4CONQCh. 19 - X-rays strike a chromosome in a living cell and...Ch. 19 - Prob. 6CONQCh. 19 - Prob. 7CONQCh. 19 - 8. A point mutation occurs in the middle of the...Ch. 19 - Prob. 9CONQCh. 19 - Prob. 10CONQCh. 19 - 11. Is a random mutation more likely to be...Ch. 19 - 12. Which of the following mutations could be...Ch. 19 - Prob. 13CONQCh. 19 - Discuss the consequences of a germ-line versus a...Ch. 19 - Prob. 15CONQCh. 19 - Explain how a mutagen can interfere with DNA...Ch. 19 - What type of mutation (transition, transversion,...Ch. 19 - Explain what happens to the sequence of DNA during...Ch. 19 - Distinguish between spontaneous and induced...Ch. 19 - Prob. 20CONQCh. 19 - Prob. 21CONQCh. 19 - Prob. 22CONQCh. 19 - Trinucleotide repeat expansions (TNREs) are...Ch. 19 - 24. With regard to TNRE, what is meant by the term...Ch. 19 - 25. What is the difference between the mutation...Ch. 19 - Achondroplasia is a rare form of dwarfism. It is...Ch. 19 - Prob. 27CONQCh. 19 - In the treatment of cancer, the basis for many...Ch. 19 - Prob. 29CONQCh. 19 - 30. Which of the following examples is likely to...Ch. 19 - Prob. 31CONQCh. 19 - Prob. 32CONQCh. 19 - Prob. 33CONQCh. 19 - With regard to the repair of double-strand breaks,...Ch. 19 - Prob. 35CONQCh. 19 - Prob. 36CONQCh. 19 - 37. Three common ways to repair changes in DNA...Ch. 19 - Prob. 38CONQCh. 19 - Prob. 39CONQCh. 19 - Explain how the technique of replica plating...Ch. 19 - 2. Outline how you would use the technique of...Ch. 19 - 3. From an experimental point of view, is it...Ch. 19 - Prob. 4EQCh. 19 - Prob. 5EQCh. 19 - 6. Richard Boyce and Paul Howard-Flanders...Ch. 19 - In E. coli, a variety of mutator strains have been...Ch. 19 - 2. Discuss the times in a person’s life when it is...Ch. 19 - A large amount of research is aimed at studying...
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- Fill the Table with mutagenic agents and provide their type (physical, chemical, biological) and their classification based on their effect (teratogenic, carcinogenic, clastogenic, or non-specific), together with their modes of action. Mutagen Type of Mutagen Classification based on effect Action Cobalt Nickel Methylhydrazine Temozolomide Ethyl ethane sulfatearrow_forwardDiscuss in a minimum of 300 words the social and ethical issues associated with genome research.arrow_forwardFrom your knowledge about DNA microarray, answer the following: A- How DNA microarray is created? and why it is referred to as “hybridization technology”? B- Why RT-PCR is important in the sample preparation to perform expression microarray experiment? C- Mention the name and the color of the dyes used in expression microarray? D- If the expression microarray experiment was done with a normal sample and a suspected sample, after reading the color pattern resulted from the experiment it was recorded that “gene A22” is expressed in the suspected sample. The gene A22 is clinically linked to colon cancer. Answer the following: What is the expected color of the spot on the microarray which represents this gene? What is your interpretation of the suspected sample; is it a cancer sample or not and explain why?arrow_forward
- Topic: Recombinant pharmaceuticals (for the production of insulin, human growth hormone or blood clotting factors) Question Describe the molecular genetics process using proper scientific terminology. Describe the steps that are involved. How is it performed?arrow_forwardWhat is the Ames test and how is it carried out? What assumption concerning mutagenicity and carcinogenicity is it based upon?arrow_forwardFor what purposes is DNA extraction done? (give at least 3 purposes for which you may need to extract DNA)arrow_forward
- Answer each of the following questions correctly. a. How PCR may be used for the detection of disease–causing pathogens in a population during COVID Pandemic. For example: It may be used to check if a patient has a COVID virus infection. b. How cloning and expression of certain genes allows for massive production of the desired product. For example: the cloning and expression of insulin in bacteria allows for the mass production of this necessary protein for use by diabetic patients.arrow_forwardIt has been suggested that it would make the study of human diseases easier if cloned transgenic animals were produced that carried faulty versions of human genes (e.g., the gene that causes cystic fibrosis). a. Why would such animals be useful in medical research? : b. What ethical questions are raised by the creation of such transgenic animals?arrow_forwardFrom your knowledge about DNA microarray, answer the following: If the expression microarray experiment was done with a normal sample and a suspected sample, after reading the color pattern resulted from the experiment it was recorded that “gene A22” is expressed in the suspected sample. The gene A22 is clinically linked to colon cancer. Answer the following: What is the expected color of the spot on the microarray which represents this gene? What is your interpretation of the suspected sample; is it a cancer sample or not and explain why?arrow_forward
- Consider the following results from the Ames test: Test plate - 20 colonies Does the test plate contain a chemical that is a mutagen? O Not enough information is present to answer the question. Yes O Noarrow_forwardDescribe the main technique for amplifying a segment of DNA (like the one you suspect is involved in Lee’s cancer) from a complex mixture of genomic DNA. Remember that the entire human genome sequence is known. (Hint: This is a technique that is commonly used by laboratories that do genetic testing and various other applications of molecular biology.)arrow_forwardwhen creating a transgenic animal Discuss two reasons you need to cut the plasmids prior to inserting them into the fertilized egg.arrow_forward
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