Textbook Question
What are the advantages and disadvantages of using GFP versus lacZ as a reporter gene in mice, C. elegans, and Drosophila?
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Ch. 14 - Analysis of Gene Function via Forward Genetics and Reverse Genetics
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172
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Table of contents
- Ch. 1 - The Molecular Basis of Heredity, Variation, and Evolution64
- Ch. 2 - Transmission Genetics144
- Ch. 3 - Cell Division and Chromosome Heredity81
- Ch. 4 - Gene Interaction87
- Ch. 5 - Genetic Linkage and Mapping in Eukaryotes103
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages73
- Ch. 7 - DNA Structure and Replication71
- Ch. 8 - Molecular Biology of Transcription and RNA Processing79
- Ch. 9 - The Molecular Biology of Translation110
- Ch. 10 - Eukaryotic Chromosome Abnormalities and Molecular Organization100
- Ch. 11 - Gene Mutation, DNA Repair, and Homologous Recombination86
- Ch. 12 - Regulation of Gene Expression in Bacteria and Bacteriophage90
- Ch. 13 - Regulation of Gene Expression in Eukaryotes38
- Ch. 14 - Analysis of Gene Function via Forward Genetics and Reverse Genetics72
- Ch. 15 - Recombinant DNA Technology and Its Applications69
- Ch. 16 - Genomics: Genetics from a Whole-Genome Perspective49
- Ch. 17 - Organelle Inheritance and the Evolution of Organelle Genomes27
- Ch. 18 - Developmental Genetics43
- Ch. 19 - Genetic Analysis of Quantitative Traits66
- Ch. 20 - Population Genetics and Evolution at the Population, Species, and Molecular Levels105
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172Not the one you use?Change textbook
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Sanders 3rd EditionCh. 14 - Analysis of Gene Function via Forward Genetics and Reverse GeneticsProblem C.1b
Sanders 3rd EditionCh. 14 - Analysis of Gene Function via Forward Genetics and Reverse GeneticsProblem C.1bChapter 14, Problem C.1b
Identify the normal functions of the following genes whose mutations are associated with the development of cancer.
c-MYC(Burkitt lymphoma)
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Understand that c-MYC is a proto-oncogene, which means its normal function is to regulate cell growth and division by encoding a transcription factor that controls the expression of genes involved in cell cycle progression.
Recognize that in normal cells, c-MYC helps promote controlled cell proliferation and apoptosis, maintaining a balance necessary for healthy tissue function.
Note that mutations or translocations involving c-MYC, such as those seen in Burkitt lymphoma, lead to its overexpression, causing uncontrolled cell division and contributing to cancer development.
Summarize that the normal function of c-MYC is to act as a regulator of gene expression that promotes cell growth, differentiation, and apoptosis under tight control.
Conclude that understanding the normal role of c-MYC helps explain how its dysregulation through mutation or translocation can lead to oncogenesis.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Oncogenes and Proto-oncogenes
Proto-oncogenes are normal genes that regulate cell growth and division. When mutated or abnormally expressed, they become oncogenes that can promote uncontrolled cell proliferation, leading to cancer. Understanding the role of proto-oncogenes like c-MYC is essential to grasp how their mutations contribute to tumor development.
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Cancer Mutations
Function of c-MYC Gene
The c-MYC gene encodes a transcription factor that regulates the expression of genes involved in cell cycle progression, metabolism, and apoptosis. Normally, c-MYC controls cell growth and proliferation, but its overexpression or mutation can drive oncogenesis, as seen in Burkitt lymphoma.
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Molecular Basis of Burkitt Lymphoma
Burkitt lymphoma is characterized by a chromosomal translocation involving c-MYC, leading to its deregulated expression. This translocation places c-MYC under the control of immunoglobulin gene enhancers, causing excessive cell proliferation in B lymphocytes and contributing to cancer development.
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Related Practice
Textbook Question
Identify the normal functions of the following genes whose mutations are associated with the development of cancer.
p53(Li–Fraumeni syndrome)
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Textbook Question
Identify the normal functions of the following genes whose mutations are associated with the development of cancer.
Which of these genes would you classify as a proto-oncogene and which as a tumor suppressor gene? Explain your categorization for each gene.
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Textbook Question
Identify the normal functions of the following genes whose mutations are associated with the development of cancer.
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Textbook Question
Identify the normal functions of the following genes whose mutations are associated with the development of cancer.
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