Mastering Genetics with Pearson eText -- Standalone Access Card -- for Essentials of Genetics (9th Edition)
9th Edition
ISBN: 9780134189994
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 16, Problem 1PDQ
HOW DO WE KNOW?
In this chapter, we focused on cancer as a genetic disease. In particular, we discussed the relationship between cancer, the cell cycle, and mutations in proto-oncogenes and tumor-suppressor genes. Based on your knowledge of these topics, answer several fundamental questions:
(a) How do we know that malignant tumors arise from a single cell that contains mutations?
(b) How do we know that cancer development requires more than one mutation?
(c) How do we know that cancer cells contain defects in DNA repair?
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Can we cure cancer by restoring the function of tumor suppressor proteins such as mutant p53 or pRb? If so, how is this possible?
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What is the difference in an oncogene and tumor suppressor gene and how can each potentially lead to cancer?
Chapter 16 Solutions
Mastering Genetics with Pearson eText -- Standalone Access Card -- for Essentials of Genetics (9th Edition)
Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 - HOW DO WE KNOW? In this chapter, we focused on...Ch. 16 -
2. Review the Chapter Concepts list on page 307....Ch. 16 - What is the relationship between signal...Ch. 16 - Where are the major regulatory points in the cell...Ch. 16 -
5. Describe kinases and cyclins. How do they...Ch. 16 - (a) How does pRB function to keep cells at the G1...Ch. 16 - What is the difference between saying that cancer...
Ch. 16 -
8. What is apoptosis, and under what...Ch. 16 - Define tumor-suppressor genes. Why is a mutation...Ch. 16 - A genetic variant of the retinoblastoma protein,...Ch. 16 -
11. Part of the Ras protein is associated with...Ch. 16 - If a cell suffers damage to its DNA while in S...Ch. 16 - Prob. 13PDQCh. 16 - Prob. 14PDQCh. 16 - Prob. 15PDQCh. 16 - Prob. 16PDQCh. 16 - Prob. 17PDQCh. 16 - How do normal cells protect themselves from...Ch. 16 - Prob. 19PDQCh. 16 - Explain how environmental agents such as chemicals...Ch. 16 - Radiotherapy (treatment with ionizing radiation)...Ch. 16 - Genetic tests that detect mutations in the BRCA1...Ch. 16 - Prob. 23PDQCh. 16 - Prob. 24PDQCh. 16 - Prob. 25PDQCh. 16 - Prob. 26PDQCh. 16 - Prob. 27PDQCh. 16 - Prob. 28PDQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Another model, the random model, proposes that any cell in a malignant tumor has the potential to form a new tumor. Does the cancer stem cell hypothesis contradict this idea?arrow_forwardWhat is the difference between a proto-oncogene and a tumor-suppressor gene?arrow_forwardWhat is the difference between a proto-oncogene and a tumor suppressor gene? How can mutations in these genes lead to cancer?arrow_forward
- What is cancer? What defects are commonly found in cancer cells? Do all cancer cells have mutations in the same genes? Explain.arrow_forwardHow can the role of epigenetics in cancer be reconciled with the idea that cancer is caused by the accumulation of genetic mutations in tumor-suppressor genes and proto-oncogenes?arrow_forwardHow do BRCA1 and BRCA2 function in regard to cell proliferation (are they proto-oncogenes, oncogenes, or tumor suppressor genes)?arrow_forward
- Describe the steps by which the TP53 gene responds to DNA damage and/or cellular stress to promote cell-cycle arrest and apoptosis. Given that TP53 is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without the recessive gene?arrow_forwardExplain how p53 functions as a tumor suppressor gene. How can mutations in p53 lead to cancer, and how might gene therapy or other drug interventions inhibit the growth of a tumor?arrow_forwardHow tumor-suppressor mutations contribute to cancer?arrow_forward
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