Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 19, Problem 2QSDC
Discuss the times in a person’s life when it is most important to avoid mutagens. Which parts of a person’s body should be the most highly protected from mutagens?
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Discuss the times in a person’s life when it is most important toavoid mutagens. Which parts of a person’s body should be the mosthighly protected from mutagens?
Explain how a mutagen can interfere with DNA replication to cause a mutation. Give two examples.
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
Heat
5-bromouracil
Ethidium bromide
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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- Our bodies are not defenseless against mutagens that alter our genomic DNA sequences. What mechanisms are used to repair DNA?arrow_forwardAlthough it is well known that X-rays cause mutations, they are routinely used to diagnose medical problems, including potential tumors, broken bones, and dental cavities. Why is this done? What precautions need to be taken?arrow_forwardFill 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_forward
- 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 2-aminopurine Acridine orange Proflavinearrow_forwardName the two types of mutagens, give an example for each, and briefly describe how they cause mutations. Mutagen: Example: Description: Mutagen: Example: Description:arrow_forwardHow does a mutagen induce mutation ?explain with examples?arrow_forward
- 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 UV – radiation X-Ray radiation Virus Heat 5-bromouracil Ethidium bromide 2-aminopurine Acridine orange Proflavine Cobalt Nickel Methylhydrazine Temozolomide Ethyl ethane sulfatearrow_forwardThe word mutation is generally considered to be negative. However, is there a positive side to mutations? Briefly explain your answer.arrow_forwardA person treated successfully by gene therapy will still have a defective copy of the gene. Explain why.arrow_forward
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