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Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?
ASO testing determines that an individual is a carrier for the mutant β-globin allele (βˢ) found in sickle-cell anemia.
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Ch. 22 - Applications of Genetic Engineering and Biotechnology
Klug12th EditionConcepts of GeneticsISBN: 9780135564776
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TOC.tableOfContents
- Ch. 1 - Introduction to Genetics17
- Ch. 2 - Mitosis and Meiosis36
- Ch. 3 - Mendelian Genetics51
- Ch. 4 - Extensions of Mendelian Genetics74
- Ch. 5 - Chromosome Mapping in Eukaryotes51
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages46
- Ch. 7 - Sex Determination and Sex Chromosomes33
- Ch. 8 - Chromosome Mutations: Variation in Number and Arrangement40
- Ch. 9 - Extranuclear Inheritance31
- Ch. 10 - DNA Structure and Analysis43
- Ch. 11 - DNA Replication and Recombination44
- Ch. 12 - DNA Organization in Chromosomes30
- Ch. 13 - The Genetic Code and Transcription54
- Ch. 14 - Translation and Proteins47
- Ch. 15 - Gene Mutation, DNA Repair, and Transposition41
- Ch. 16 - Regulation of Gene Expression in Bacteria29
- Ch. 17 - Transcriptional Regulation in Eukaryotes41
- Ch. 18 - Post-transcriptional Regulation in Eukaryotes33
- Ch. 19 - Epigenetics33
- Ch. 20 - Recombinant DNA Technology44
- Ch. 21 - Genomic Analysis36
- Ch. 22 - Applications of Genetic Engineering and Biotechnology36
- Ch. 23 - Developmental Genetics37
- Ch. 24 - Cancer Genetics34
- Ch. 25 - Quantitative Genetics and Multifactorial Traits54
- Ch. 26 - Population and Evolutionary Genetics45
Klug12th EditionConcepts of GeneticsISBN: 9780135564776Non è quello che usi tu?Cambia libro di testo
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Klug 12th EditionCh. 22 - Applications of Genetic Engineering and BiotechnologyProblema 9a
Klug 12th EditionCh. 22 - Applications of Genetic Engineering and BiotechnologyProblema 9aCapitolo 22, Problema 9a
Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?
Individual sequencing (personal genomics) identifies a mutation associated with Alzheimer's disease.
Guida verificata passo dopo passo1
Understand the difference between prognostic and diagnostic tests: A diagnostic test is used to confirm or rule out a specific genetic condition in an individual who is showing symptoms. A prognostic test, on the other hand, predicts the likelihood of developing a condition in the future, often in asymptomatic individuals.
Analyze the context of the problem: The example provided involves individual sequencing (personal genomics) that identifies a mutation associated with Alzheimer's disease. This suggests that the test is identifying a genetic predisposition rather than confirming the presence of the disease.
Determine if the test is diagnostic: A diagnostic test would require the individual to already exhibit symptoms of Alzheimer's disease, and the test would confirm or rule out the disease. In this case, the test does not confirm the presence of Alzheimer's disease but rather identifies a mutation.
Determine if the test is prognostic: Since the test identifies a mutation associated with Alzheimer's disease and predicts the likelihood of developing the condition in the future, it fits the definition of a prognostic test.
Conclude the classification: Based on the analysis, individual sequencing (personal genomics) that identifies a mutation associated with Alzheimer's disease is a prognostic test, not a diagnostic test.
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Prognostic Testing
Prognostic testing refers to genetic tests that assess the likelihood of developing a disease in the future based on genetic predispositions. These tests do not confirm the presence of a disease but rather provide information about the risk factors associated with certain conditions, helping individuals make informed health decisions.
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Diagnostic Testing
Diagnostic testing is used to determine whether an individual has a specific genetic condition or disease. These tests analyze genetic material to confirm the presence of mutations or abnormalities that are directly linked to a particular health issue, allowing for accurate diagnosis and treatment planning.
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Personal Genomics
Personal genomics involves the sequencing and analysis of an individual's genome to provide insights into their genetic makeup. This field encompasses both diagnostic and prognostic testing, as it can reveal mutations linked to diseases like Alzheimer's, helping individuals understand their genetic risks and health profiles.
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Domanda del libro di testo
As genetic testing becomes widespread, medical records will contain the results of such testing. Who should have access to this information? Should employers, potential employers, or insurance companies be allowed to have this information? Would you favor or oppose having the government establish and maintain a central database containing the results of individuals' genome scans?
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Domanda del libro di testo
Might it make sense someday to sequence every newborn's genome at the time of birth? What are the potential advantages and concerns of this approach?
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Domanda del libro di testo
Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?
DNA sequencing of a breast tumor reveals mutations in the BRCA1 gene.
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Domanda del libro di testo
Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?
Genetic testing in a healthy teenager identifies an SNP correlated with autism.
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Domanda del libro di testo
A couple with European ancestry seeks genetic counseling before having children because of a history of cystic fibrosis (CF) in the husband's family. ASO testing for CF reveals that the husband is heterozygous for the Δ508 mutation and that the wife is heterozygous for the R117 mutation. You are the couple's genetic counselor. When consulting with you, they express their conviction that they are not at risk for having an affected child because they each carry different mutations and cannot have a child who is homozygous for either mutation. What would you say to them?
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