EBK ESSENTIALS OF GENETICS
9th Edition
ISBN: 8220102741614
Author: Palladino
Publisher: YUZU
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Chapter 18, Problem 10PDQ
Summary Introduction
To review:
The primary variation in the human genome for differing different individuals.
Introduction:
The human genome is the overall
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The Human Genome Project has demonstrated that in humans of all races and nationalities approximately 99.9 percent of the sequence is the same, yet different individuals can be identified by DNA fingerprinting techniques. What is one primary variation in the human genome that can be used to distinguish different individuals? Briefly explain your answer.
What does the future hold for genomes? How will they be different in 100, 1,000, 1 million, or 1 billion years? Make this a long discussion.
If you had the ability to do gene editing with ONE gene for the betterment of human kind, which one would you choose, and why? Assume you could either change an abnormal allele associated with a disease, such as the cystin gene associated with Cystic Fibrosis to its normal wild type, or add a pre-existing human allele to a genome.
Chapter 18 Solutions
EBK ESSENTIALS OF GENETICS
Ch. 18 -
CASE STUDY | Your microbiome may be a risk factor...Ch. 18 - CASE STUDY|Your microbiome may be a riskfactor for...Ch. 18 -
CASE STUDY | Your microbiome may be a risk...Ch. 18 -
HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 18 - Review the Chapter Concepts list on page 345. All...Ch. 18 - Prob. 3PDQCh. 18 - Prob. 4PDQCh. 18 - Prob. 5PDQCh. 18 - Prob. 6PDQCh. 18 - Prob. 7PDQ
Ch. 18 -
8. BLAST searches and related applications are...Ch. 18 - Describe the human genome in terms of genome size,...Ch. 18 - Prob. 10PDQCh. 18 -
11. Annotation involves identifying genes and...Ch. 18 - Through the Human Genome Project (HGP), a...Ch. 18 -
13. Describe the significance of the Genome 10K...Ch. 18 - Prob. 14PDQCh. 18 - Prob. 15PDQCh. 18 - Prob. 16PDQCh. 18 -
17. Annotation of the human genome sequence...Ch. 18 - Prob. 18PDQCh. 18 - Prob. 19PDQCh. 18 - Prob. 20PDQ
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- When analyzing the automated DNA fingerprints of a father and his biological daughter, a technician examined 50 peaks and found that 30 of them were a perfect match. In other words, 30 out of 50 peaks, or 60%, were a perfect match. Is this percentage too high, or would you expect a value of only 50%? Explain why or why not.arrow_forwardWhat is the most surprising result found thus far in the human genome studies?arrow_forwardDNA profiling has been used to verify pedigrees of valuable animals such as show dogs, racing greyhounds, and thoroughbred horses. However, the technology is much harder to apply in these cases than it is in forensic applications for humans. In particular, many more DNA markers must be examined in domesticated animals to stablish the identity or close familial relationship of two DNA samples. Why would you need to look at more polymorphic loci in these animals than you would in humans?arrow_forward
- Given our knowledge of genome sizes in different organisms, would you predict that Homo sapiens or the two-toed salamander (Amphiuma means) has the larger genome?arrow_forwardWhen the human genome sequence was finally completed, scientists were surprised to discover that the genome contains far fewer genes than expected. How many genes are present in the human genome? Scientists have also found that there are many more different kinds of proteins in human cells than there are different genes in the genome. How can this be explained?arrow_forwardCan DNA profiling identify the source of a sample with absolute certainty? Because any two human genomes differ at about 3 million sites, no two persons (except identical twins) have the same DNA sequence. Unique identification with DNA profiling is therefore possible if enough sites of variation are examined. However, the systems used today examine only a few sites of variation. Nonetheless, even with todays technology, which uses three to five loci, a match between two DNA patterns can be considered strong evidence that the two samples came from the same source. DNA profiling in criminal cases has been a useful tool in establishing both guilt and innocence. Originally, DNA databases contained only the profiles of convicted felons. Over time, however, law enforcement agencies have expanded the collection and use of DNA profiles, and these new policies are causing controversies, once again illustrating how the availability and use of genetic technology is often ahead of consensus on how and when this technology should be used. One of these new policies is postarrest DNA collection. At this writing, 18 U.S. states as well as the federal government allow the collection of DNA samples after an arrest but before conviction. These profiles become part of the states DNA database, which is often searched for evidence in cold cases. Courts across the country have ruled for and against the use of such samples. In 2012, the Maryland Court of Appeals ruled that the collection of DNA samples from someone who has been arrested but not convicted is unconstitutional and violates an individuals right to be free from unreasonable search and seizure. The case began when a DNA sample was taken from Alonzo Jay King, Jr., who was arrested in 2009 for assault. In a database search, the DNA profile matched that taken from a 2003 unsolved rape. Based on the results of the database search, the man was sentenced to life in prison. The rape conviction was reversed, and the case was sent back to a lower court. As a result, some 16,000 DNA profiles collected postarrest but preconviction since 2009 cannot be used pending appeal of this decision. Before the court decision, postarrest DNA profiles were used in 65 arrests that resulted in 34 convictions, with an additional 12 cases pending. Supporters of postarrest DNA profiling claim that taking a DNA sample by a cheek swab is noninvasive and no different from taking someones fingerprints. Opponents claim that because DNA samples can be used to determine much more than a DNA profile, they are a threat to privacy, and that because minorities are more likely to be arrested, the practice is discriminatory. What if you learned that law enforcement officials were saving the DNA sample for use in tests that might be developed in the future?arrow_forward
- Can DNA profiling identify the source of a sample with absolute certainty? Because any two human genomes differ at about 3 million sites, no two persons (except identical twins) have the same DNA sequence. Unique identification with DNA profiling is therefore possible if enough sites of variation are examined. However, the systems used today examine only a few sites of variation. Nonetheless, even with todays technology, which uses three to five loci, a match between two DNA patterns can be considered strong evidence that the two samples came from the same source. DNA profiling in criminal cases has been a useful tool in establishing both guilt and innocence. Originally, DNA databases contained only the profiles of convicted felons. Over time, however, law enforcement agencies have expanded the collection and use of DNA profiles, and these new policies are causing controversies, once again illustrating how the availability and use of genetic technology is often ahead of consensus on how and when this technology should be used. One of these new policies is postarrest DNA collection. At this writing, 18 U.S. states as well as the federal government allow the collection of DNA samples after an arrest but before conviction. These profiles become part of the states DNA database, which is often searched for evidence in cold cases. Courts across the country have ruled for and against the use of such samples. In 2012, the Maryland Court of Appeals ruled that the collection of DNA samples from someone who has been arrested but not convicted is unconstitutional and violates an individuals right to be free from unreasonable search and seizure. The case began when a DNA sample was taken from Alonzo Jay King, Jr., who was arrested in 2009 for assault. In a database search, the DNA profile matched that taken from a 2003 unsolved rape. Based on the results of the database search, the man was sentenced to life in prison. The rape conviction was reversed, and the case was sent back to a lower court. As a result, some 16,000 DNA profiles collected postarrest but preconviction since 2009 cannot be used pending appeal of this decision. Before the court decision, postarrest DNA profiles were used in 65 arrests that resulted in 34 convictions, with an additional 12 cases pending. Supporters of postarrest DNA profiling claim that taking a DNA sample by a cheek swab is noninvasive and no different from taking someones fingerprints. Opponents claim that because DNA samples can be used to determine much more than a DNA profile, they are a threat to privacy, and that because minorities are more likely to be arrested, the practice is discriminatory. Would you object if you were arrested for a minor offense, such as a traffic violation, and ordered to provide a DNA sample?arrow_forwardCan DNA profiling identify the source of a sample with absolute certainty? Because any two human genomes differ at about 3 million sites, no two persons (except identical twins) have the same DNA sequence. Unique identification with DNA profiling is therefore possible if enough sites of variation are examined. However, the systems used today examine only a few sites of variation. Nonetheless, even with todays technology, which uses three to five loci, a match between two DNA patterns can be considered strong evidence that the two samples came from the same source. DNA profiling in criminal cases has been a useful tool in establishing both guilt and innocence. Originally, DNA databases contained only the profiles of convicted felons. Over time, however, law enforcement agencies have expanded the collection and use of DNA profiles, and these new policies are causing controversies, once again illustrating how the availability and use of genetic technology is often ahead of consensus on how and when this technology should be used. One of these new policies is postarrest DNA collection. At this writing, 18 U.S. states as well as the federal government allow the collection of DNA samples after an arrest but before conviction. These profiles become part of the states DNA database, which is often searched for evidence in cold cases. Courts across the country have ruled for and against the use of such samples. In 2012, the Maryland Court of Appeals ruled that the collection of DNA samples from someone who has been arrested but not convicted is unconstitutional and violates an individuals right to be free from unreasonable search and seizure. The case began when a DNA sample was taken from Alonzo Jay King, Jr., who was arrested in 2009 for assault. In a database search, the DNA profile matched that taken from a 2003 unsolved rape. Based on the results of the database search, the man was sentenced to life in prison. The rape conviction was reversed, and the case was sent back to a lower court. As a result, some 16,000 DNA profiles collected postarrest but preconviction since 2009 cannot be used pending appeal of this decision. Before the court decision, postarrest DNA profiles were used in 65 arrests that resulted in 34 convictions, with an additional 12 cases pending. Supporters of postarrest DNA profiling claim that taking a DNA sample by a cheek swab is noninvasive and no different from taking someones fingerprints. Opponents claim that because DNA samples can be used to determine much more than a DNA profile, they are a threat to privacy, and that because minorities are more likely to be arrested, the practice is discriminatory. What are your thoughts on the collection and use of postarrest DNA profiles?arrow_forwardWhat is the purpose of the Human Genome Project? Why do researchers want to know the details of the human genome?arrow_forward
- What is meant by the term DNA fingerprinting?arrow_forwardHow to find the human chromosome DNA sequence ? Where I can get exact data ?arrow_forwardDescribe the three basic goals of the Human Genome Project. What are at least three things we have learned from the project? Do you believe it was a worthwhile project? Why or why not?arrow_forward
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