Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 12, Problem 6QP
Summary Introduction
Introduction: Cancer is caused due to mutation in the genome of the cells. The mutation can be of different types namely single
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Which of the following statements about cancer is correct?
A. Cancer stem cells can make tumors resistant to chemotherapy.
B. Intra-tumoral heterogeneity makes it easier to treat cancer.
C. Mutation in p53 is a type of passenger mutation.
D. One driver mutation is more than sufficient for the production of a cancer phenotype.
With regard to cancer cells, which of the following are true?
A.
Cancer cells are clonal, meaning that they are derived from many different cells that all underwent the same clonal mutation.
Cells usually accumulate many mutations over time, and this results in cancerous growth.
B.
Almost all cancers are caused by oncogenic viruses.
no Benign tumors are dangerous because they can easily invade surrounding tissue and spread to other locations in the body.
DE.
Cancer cells are unable to control their division.
Which of the following accurately compares tumor suppressor genes and proto-oncogenes?
A. Both tumor suppressor and proto-oncogenes prevent the spread of cancer by targeting and destroying existing cancer cells.
B. A person who has both tumor suppressor and proto-oncogenes will always develop cancer.
C. Proto-oncogenes code for growth factors, while tumor suppressor genes inhibit cell division of damaged cells.
D. When a proto-oncogene mutates, it becomes a tumor suppressor gene.
Chapter 12 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 12.10 - If improved diagnostic tests are developed from...Ch. 12.10 - If you had cancer, would you donate tissue samples...Ch. 12.10 - Prob. 1GRCh. 12.10 - Another model, the random model, proposes that any...Ch. 12 - Mike was referred for genetic counseling because...Ch. 12 - Mike was referred for genetic counseling because...Ch. 12 - Mike was referred for genetic counseling because...Ch. 12 - Theodor Boveri predicted that malignancies would...Ch. 12 - Distinguish between a familial and a sporadic...Ch. 12 - Benign tumors: a. are noncancerous growths that do...
Ch. 12 - Prob. 4QPCh. 12 - Prob. 5QPCh. 12 - Prob. 6QPCh. 12 - Prob. 7QPCh. 12 - Prob. 8QPCh. 12 - What is the difference between a proto-oncogene...Ch. 12 - Distinguish between dominant inheritance and...Ch. 12 - Describe the likelihood of developing bilateral...Ch. 12 - Prob. 12QPCh. 12 - The search for the BRCA1 breast cancer gene...Ch. 12 - What are the roles of cellular proto-oncogenes,...Ch. 12 - Which of the following mutations will result in...Ch. 12 - Prob. 16QPCh. 12 - The following family has a history of inherited...Ch. 12 - You are in charge of a new gene therapy clinic....Ch. 12 - Prob. 19QPCh. 12 - Can you postulate a reason or reasons why children...Ch. 12 - Prob. 21QPCh. 12 - In Section 12-1, Julie is concerned that she may...Ch. 12 - Prob. 23QPCh. 12 - What are some factors that epidemiologists have...Ch. 12 - Smoking cigarettes has been shown to be associated...Ch. 12 - Prob. 26QPCh. 12 - Studies have shown that there are significant...
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- Which of the following statements about cancer is false? (a) oncogenes arise from mutations in proto-oncogenes (b) tumor suppressor genes normally interact with growth-inhibiting factors to block cell division (c) more than 120 cancer-driving genes have been discovered (d) oncogenes were first discovered in mouse models for cancer (e) the development of cancer is usually a multistep process involving both oncogenes and mutated tumor suppressor genesarrow_forwardWhich of the following steps are correct about multistep tumorigenesis (select all that apply)? A. Mutations in progenitor cells are more likely to develop a neoplastic state compared to mutations in stem cells B. Driver mutations give a cell clone a proliferative advanage C. The rate of mutation /genetic change is constant during tumor progression D. Nutrition/diet may effect rate of tumorigenesis E. All cells within a tumor are biologically equivalent and equally capable of high levels proliferationarrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forward
- Which of the following is NOT an example of fail-safe mechanisms that prevent the irregular cell divisions characteristic of cancer? a.Shortening of telomeres b.Cell division limit c.Mutation in a tumor suppressor gene d.Triggered cell deatharrow_forwardWhich of the following types of mutations would be advantageous to a cancer cell (select all that apply)? A. An inactivating mutation in a tumor suppressor gene B. Methylation of the promoter of a tumor suppressor gene C. An inactivating mutation in an oncogene D. Mutation that inactivated DNA repair gene E. An inactivating mutation in an oncogenearrow_forwardWhich of the following statements are true about the rate of mutation in tumor cells (select all that apply)? A. Mutation rate of tumor cells is reduced compared to normal cells of the same tissue type B. Mutation rate of tumor cells is unchanged compared to normal cells of the same tissue type C. Mutation rate in tumor cells is higher compared to normal cells of the same tissue type D. Affected by genome instability within the tumor cellsarrow_forward
- Normal (nonmutant) tumor-suppressor genes often functiona. as negative regulators of cell division.b. in the maintenance of genome integrity.c. in the stimulation of cell division.d. as both a and b.arrow_forwardWhich of the following factors contributes to angiogenesis as a result of a tumor growth? Select all that apply: a. Increasing tumor's access to oxygen and nutrients b. Increasing tumor's ability for growth, invasion, and metastasis c. Increasing expression of proto-oncogenes for cancer cells d. Increasing expression of tumor-suppressor genes for cancer cellsarrow_forwardAlthough cancer is not a contagious disease in humans or other vertebrates, there have been rare cases in which cancers have spread from one organism to another. Describe three cases of these contagious cancers and what conditions might have led to their appearance. For an introduction to this topic, see http:// www.cancer.org/cancer/cancerbasics/is-cancer-contagious.arrow_forward
- Tumor Suppressor Genes are often called as gatekeepers because: a. They signify their involvement in governing the dynamics of cell proliferation b. They allow tumors to proliferate at an uncontrolled rate c. To allow a transport channel of suppressors d. They are not referred to as ?gatekeepers?arrow_forwardP53 is a tumor suppressors protein. The protein is present in the cell at all times but is activated by protein kinases that are, in turned activated by DNA damage. A mutation of the P 53 gene in cell results in a form of P53 that is permanently active. What would happen to the mutant version of the P53 gene? Group of answer choices A. it would spread to neighboring cells but not very far B. it would be found in tumor cells only C. it would take over the world and make us all do its bidding D. it would only be found in the original cell in which the mutation occurred E. it would spread to all cells in the bodyarrow_forwardWith regard to human cancer cells, which of the following statements is true? A. Cancer cells within one tumor usually do not share common mutations B. Cancer cells generally have lost the ability to divide C. Oncogenes are non-human genes not related to normal genes in the human genome D. Mutations in DNA repair genes result in an increased chance of getting cancer.arrow_forward
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