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 22, Problem 15PDQ
Summary Introduction
To determine: The ethical problems that would be associated with the example of a sixth-grade boy in Palo Alto, California.
Introduction: In the United States, the Genetic Information Nondiscrimination Act (GINA) was signed into law in 2008.
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The genetic alteration responsible for sickle-cell anemia in humans involves:
a transition mutation from A to G, substituting glutamic acid for valine in a-globin
a transversion mutation from T to A, substituting valine for glutamic acid in b-globin
a transition mutation from T to C, substituting valine for glutamic acid in b-globin
a transversion mutation from G to C, substituting glutamic acid for valine in a-globin
a frameshift mutation of one ATC codon, removing glutamic acid from b-globin
You have a patient in your clinic presenting symptoms of cystic fibrosis. You screen their CFTR gene for mutations, and find the following list:
CFTR 320 L V
CFTR 341 S W
CFTR 528 E D
CFTR 976 F Q
CFTR 1235 S R
Which mutation(s) are likely causing cystic fibrosis in this patient?
You also sequence a newborn family member of this patient. They have all of these same mutations, other than the one at position 976, and no other mutations in CFTR. Do you predict this person will develop cystic fibrosis? Explain why.
Which of the following types of physical mutagens produces thymine dimmer mutations?
A- gamma rays
B- X-rays
C- ionizing radiation
D- ultraviolet light
E- microwave
Chapter 22 Solutions
Concepts of Genetics (12th Edition)
Ch. 22 - In order to vaccinate people against diseases by...Ch. 22 - Prob. 2NSTCh. 22 - Prob. 1CSCh. 22 - Prob. 2CSCh. 22 - Prob. 3CSCh. 22 - HOW DO WE KNOW? In this chapter, we focused on a...Ch. 22 - Prob. 2PDQCh. 22 - Why are most recombinant human proteins produced...Ch. 22 - One of the major causes of sickness, death, and...Ch. 22 - Sequencing the human genome, the development of...
Ch. 22 - Prob. 6PDQCh. 22 - As genetic testing becomes widespread, medical...Ch. 22 - Prob. 8PDQCh. 22 - Prob. 9PDQCh. 22 - Does genetic analysis by ASO testing allow for...Ch. 22 - Maternal blood tests for three pregnant women...Ch. 22 - What is the main purpose of genome-wide...Ch. 22 - Describe how the team from the J. Craig Venter...Ch. 22 - Prob. 14PDQCh. 22 - Prob. 15PDQCh. 22 - Dominant mutations can be categorized according to...Ch. 22 - In 2013 the actress Angelina Jolie elected to have...Ch. 22 - Prob. 18PDQCh. 22 - Should the FDA regulate direct-to-consumer genetic...Ch. 22 - Prob. 20ESPCh. 22 - Following the tragic shooting of 20 children at a...Ch. 22 - Private companies are offering personal DNA...Ch. 22 - Prob. 23ESPCh. 22 - Prob. 24ESPCh. 22 - Prob. 25ESPCh. 22 - Craig Venter and others have constructed synthetic...
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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_forwardMention four human genetic diseases that result from single gene mutation, please answer this question with a small descriptionarrow_forward
- An unapproved form of gene therapy, known as enhancement gene therapy, can create considerable ethical dilemmas. Why?arrow_forwardWhat are some possible reasons that researchers might be interested in identifying the gene that causes a genetic disease such as ICA? In other words, what benefits might result from this research?arrow_forwardLet’s say, you want to deliver a gene into a cell and in your lab, there are lot of options available to do that. Describe five different options that you can use to deliver that gene.arrow_forward
- Forty years after its development, the use of recombinant DNA technology is widespread and is found even in many middle school and high school biology courses. Are there some aspects of gene splicing that might be dangerous in the hands of an amateur?arrow_forwardWhat is a transposon? Explain why the insertion of a transposon into the DNA of a cell can lead to a mutationarrow_forwardGeneticists often use ethylmethane sulfonate (EMS) to induce mutations in Drosophila. Why is EMS a mutagen of choice for genetic research? What would be the effects of EMS in a strain of Drosophila lacking functional mismatch repair systems?arrow_forward
- Discuss three potential benefits and three possible harmful effects of genetic modifications on humans.arrow_forwardDescribe the mechanistic steps through which gene therapy might be used to cure a disease that is caused by mutations in "Gene D". A potential patient is reluctant to undergo this treatment, because they remember hearing about adverse incidents from gene therapy studies conducted decades ago. What relevant details might you tell them, in order to inform them on this topic?.arrow_forwardSuppose a 10-year old patient has come to your office with a very rare disease. One so rare that only 100 people for the past 100 years have been diagnosed and nobody knows the gene or genes that are mutated in this disease. Describe the gene sequencing toold you would use to identify the mutated gene or genes in this hypothetical disease.arrow_forward
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