Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 24, Problem 24PDQ
As part of a cancer research project, you have discovered a gene that is mutated in many metastatic tumors. After determining the DNA sequence of this gene, you compare the sequence with those of other genes in the human genome sequence database. Your gene appears to code for an amino acid sequence that resembles sequences found in some serine proteases. Conjecture how your new gene might contribute to the development of highly invasive cancers.
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There are dozens of common variations of the c-myc gene, which are associated with different types of cancer. Here are 3 variations of part of a sequence of the c-myc gene, located between nucleotides 180 and 201. The original sequence is given to you, as well as the sequences of 3 variations. The mutated nucleotide of each variation is annotated in gray. Use this information (picture) to answer the next two (2) questions
1. Which of the c-myc variations is least likely to cause a change in c-myc function?2. Which variation of c-myc produces a nonsense mutation?
Another cancer cell line that you are working on came from a patient in your medical clinic. You
recognize that this is a new type of breast cancer that has never been described before.
a. How could you use sequence analysis to determine if this patient inherited the mutation
from one of her parents or if it spontaneously occurred in her cells? (Unfortunately her
parents have passed away.)
b. How could you use sequence analysis to determine if this gene is a tumor suppressor or
an oncogene? (For partial credit briefly define tumor suppressor and oncogene.)
What common mutation occurs in many human cancers? Explain how it can have this effect.
Chapter 24 Solutions
Concepts of Genetics (12th Edition)
Ch. 24 - Prob. 1NSTCh. 24 - People with a genetic condition known as...Ch. 24 - Prob. 3NSTCh. 24 - Cancer can arise spontaneously, but it can also be...Ch. 24 - Prob. 1CSCh. 24 - Prob. 2CSCh. 24 - If you agree to participate and then learn that...Ch. 24 - HOW DO WE KNOW? In this chapter, we focused on...Ch. 24 - Prob. 2PDQCh. 24 - Where are the major regulatory points in the cell...
Ch. 24 - List the functions of kinases and cyclins, and...Ch. 24 - How can mutations in noncoding segments of DNA...Ch. 24 - What is the difference between saying that cancer...Ch. 24 - Prob. 7PDQCh. 24 - Prob. 8PDQCh. 24 - Define tumor-suppressor genes. Why is a mutated...Ch. 24 - Describe the steps by which the TP53 gene responds...Ch. 24 - Part of the Ras protein is associated with the...Ch. 24 - Prob. 12PDQCh. 24 - Distinguish between oncogenes and proto-oncogenes....Ch. 24 - Prob. 14PDQCh. 24 - How do translocations such as the Philadelphia...Ch. 24 - Explain why many oncogenic viruses contain genes...Ch. 24 - Prob. 17PDQCh. 24 - How do normal cells protect themselves from...Ch. 24 - Prob. 19PDQCh. 24 - Epigenetics is a relatively new area of genetics...Ch. 24 - Radiotherapy (treatment with ionizing radiation)...Ch. 24 - Genetic tests that detect mutations in the BRCA1...Ch. 24 - Explain the apparent paradox that both...Ch. 24 - As part of a cancer research project, you have...Ch. 24 - Mutations in tumor-suppressor genes are associated...Ch. 24 - Prob. 26ESPCh. 24 - Those who inherit a mutant allele of the RB1...Ch. 24 - The table in this problem summarizes some of the...Ch. 24 - Researchers have identified some tumors that have...Ch. 24 - Prob. 30ESP
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