Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 13, Problem 2CBQ
Summary Introduction
Introduction:
The genetic material in all the living organisms is the DNA (deoxyribonucleic acid). The DNA sequences are unique to the organisms. The changes in the DNA sequence of an organism is referred to as mutation. The mutagen is the substance capable of causing mutations in the cells.
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A large amount of research is aimed at studying mutation.However, there is not an infinite amount of researchmoney. Where would you put your money for mutationresearch?A. Testing of potential mutagensB. Investigating molecular effects of mutagensC. Investigating DNA repair mechanismsD. Some other topic
Some mutations affect changes in protein structure and function that can result in disease whereas other mutations have no significant effects on protein structure and function.
- Please explain reasons for the above-mentioned statement.
- Human civilization has resulted in a large number of potentially mutagenic chemicals (e.g. pesticides) and has changed the environment to increase the likelihood of encountering other mutagens, especially UV radiation. What roles should the authorities play in identifying mutagens and regulating their release into the environment? Please discuss the subject in detail.
Some mutations affect changes in protein structure and function that can result in disease whereas other mutations have no significant effects on protein structure and function.
Please explain reasons for the above mentioned statement.
Human civilization has resulted in a large number of potentially mutagenic chemicals (e.g. pesticides) and has changed the environment to increase the likelihood of encountering other mutagens, especially UV radiation. What roles should the authorities play in identifying mutagens and regulating their release into the environment?
Chapter 13 Solutions
Principles of Biology
Ch. 13.1 - Prob. 1CCCh. 13.1 - Prob. 2CCCh. 13.1 - Prob. 1TYKCh. 13.1 - Prob. 2TYKCh. 13.2 - Prob. 1CCCh. 13.2 - Prob. 2CCCh. 13.2 - Prob. 1TYKCh. 13.2 - Prob. 2TYKCh. 13.3 - Prob. 1CCCh. 13.3 - Prob. 1TYK
Ch. 13.4 - Prob. 1CCCh. 13.4 - Prob. 1BCCh. 13.4 - Prob. 2CCCh. 13.4 - Prob. 3CCCh. 13.4 - Prob. 4CCCh. 13.4 - Prob. 1TYKCh. 13.4 - Prob. 2TYKCh. 13 - A mutation removes a single base pair within the...Ch. 13 - Prob. 2TYCh. 13 - Prob. 3TYCh. 13 - Prob. 4TYCh. 13 - Prob. 5TYCh. 13 - Prob. 6TYCh. 13 - Prob. 7TYCh. 13 - Prob. 8TYCh. 13 - Prob. 9TYCh. 13 - Prob. 10TYCh. 13 - Prob. 1CCQCh. 13 - Prob. 2CCQCh. 13 - Prob. 3CCQCh. 13 - Prob. 1CBQCh. 13 - Prob. 2CBQ
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- Although 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_forwardTwo types of mutations discussed in this chapter are (1) nucleotide changes and (2) unstable genome regions that undergo dynamic changes. Describe each type of mutation.arrow_forwardMutations can be caused by which process? faulty DNA repair nondisjunction base sequence deletion All of the abovearrow_forward
- What type of mutation (transition, transversion, or frameshift)would you expect each of the following mutagens to cause?A. Nitrous acidB. 5-BromouracilC. Proflavinarrow_forwardWhy can’t all genetic diseases be treated with gene therapy ? Explain how the ideal procedure for gene therapy would work ?arrow_forwardHow does a mutagen induce mutation ?explain with examples?arrow_forward
- Why are X rays more potent mutagens than UV radiation?arrow_forwardInduced mutations result from ________. exposure to a hazard such as a chemical exposure to a hazard such as a chemical somatic mutations during embryonic development somatic mutations during embryonic development a mistake in DNA replicationarrow_forwardSuppose that a gene has a mutation that changes one nucleotide. Compared to the protein produced from the non-mutated gene, the protein produced from this mutated gene has one different amino acid. This newly altered protein provides enhanced resistance to tetracycline (an antibiotic). This type of mutation would be classified as a missense mutation. silent mutation. frameshift mutation. nonsense mutation. promutation.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_forwardWhich of the following is not an example of a transversion mutation? a) T·A -> C·G b) G·C -> C·G c) T·A -> G·C d) C·G -> A·T e) A·T -> T·Aarrow_forwardDuring an Ames test, bacteria were exposed to a potential mutagen.Also, as a control, another sample of bacteria was not exposedto the mutagen. In both cases, 10 million bacteria were plated andthe following results were obtained:No mutagen: 17 coloniesWith mutagen: 2017 coloniesCalculate the mutation rate in the presence and absence of the mutagen.How much does the mutagen increase the rate of mutation?arrow_forward
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