Concepts of Genetics (11th Edition)
11th Edition
ISBN: 9780321948915
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 10, Problem 30PDQ
Because of its rapid turnaround time, fluorescent in situ hybridization (FISH) is commonly used in hospitals and laboratories as an aneuploid screen of cells retrieved from amniocentesis and chorionic villus sampling (CVS). Chromosomes 13, 18, 21, X, and Y (see Chapter 8) are typically screened for aneuploidy in this way. Explain how FISH might be accomplished using amniotic or CVS samples and why the above chromosomes have been chosen for screening.
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Explain how DNA probes with different fluorescence emissionwavelengths can be used in a single FISH experiment to map thelocations of two or more genes. This method is called chromosomepainting. Explain why this is an appropriate term.
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5'-------TGT(G/C)CAG------3'
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Chapter 10 Solutions
Concepts of Genetics (11th Edition)
Ch. 10 - Would an experiment similar to that performed by...Ch. 10 - In sea urchin DNA, which is double stranded, 17.5...Ch. 10 - German measles results from an infection of the...Ch. 10 - Smallpox, a once highly lethal contagious disease,...Ch. 10 - Prob. 2CSCh. 10 - Prob. 3CSCh. 10 - Prob. 4CSCh. 10 - HOW DO WE KNOW? In this chapter, we first focused...Ch. 10 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 10 - Discuss the reasons proteins were generally...
Ch. 10 - Prob. 4PDQCh. 10 - When Avery and his colleagues had obtained what...Ch. 10 - Why were 32P and 35S chosen for use in the...Ch. 10 - Does the design of the HersheyChase experiment...Ch. 10 - What observations are consistent with the...Ch. 10 - What are the exceptions to the general rule that...Ch. 10 - Draw the chemical structure of the three...Ch. 10 - How are the carbon and nitrogen atoms of the...Ch. 10 - Adenine may also be named 6-amino purine. How...Ch. 10 - Draw the chemical structure of a dinucleotide...Ch. 10 - Describe the various characteristics of the...Ch. 10 - What evidence did Watson and Crick have at their...Ch. 10 - What might Watson and Crick have concluded had...Ch. 10 - How do covalent bonds differ from hydrogen bonds?...Ch. 10 - List three main differences between DNA and RNA.Ch. 10 - What are the three major types of RNA molecules?...Ch. 10 - Prob. 20PDQCh. 10 - What is the physical state of DNA after it is...Ch. 10 - What is the hyperchromic effect? How is it...Ch. 10 - Why is Tm related to base composition?Ch. 10 - What is the chemical basis of molecular...Ch. 10 - What did the WatsonCrick model suggest about the...Ch. 10 - A genetics student was asked to draw the chemical...Ch. 10 - Considering the information in this chapter on B-...Ch. 10 - One of the most common spontaneous lesions that...Ch. 10 - In some organisms, cytosine is methylated at...Ch. 10 - Because of its rapid turnaround time, fluorescent...Ch. 10 - Prob. 31PDQCh. 10 - Prob. 32ESPCh. 10 - Newsdate: March 1, 2030. A unique creature has...Ch. 10 - Prob. 34PDQCh. 10 - During gel electrophoresis, DNA molecules can...Ch. 10 - Electrophoresis is an extremely useful procedure...Ch. 10 - Following is a table (modified from Kropinski,...
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- As the leading scientist in a biomedical science laboratory, it is a requirement to give advice to your lab assistants when they are having problems with their experiments. What advice would you give to your assistants that are having the following problems: After performing a polymerase chain reaction (PCR) and agarose gel electrophoresis to confirm the presence of the C01 gene of 750bp. 2.1. They observe no band appearing on an agarose gel. What would be your conclusion? 2.2. They observe three bands of different sizes that resemble a smear on the gel. Advice 2.3. They observe a single band on the gel and conclude that the PCR product is an exact copy of the original template DNA. Would you support their condusion? Explain. 2.4. Explain how PCR can be used to detect infectious agents in diagnoses of diseases.arrow_forwardBacterial and eukaryotic chromosomes are very compact. Discuss theadvantages and disadvantages of a compact chromosomal structure.arrow_forwardA person with a rare genetic disease has a sample of her chromosomessubjected to in situ hybridization using a probe that is known to recognize band p11 on chromosome 7. Even though her chromosomes look cytologically normal, the probe does not bind to this person’s chromosomes. How would you explain these results? How would you use this information to positionally clone the gene that is related to this disease?arrow_forward
- Describe the difference between Sanger based sequencing and Next Generation Sequencing (NGS). Why is NGS advantageous over Sanger based sequencing?arrow_forwardMicrosatellites are currently exploited as markers for paternity testing. A sample paternity test is shown in the following table in which ten microsatellite markers were used to test samples from a mother, her child, and an alleged father. The name of the microsatellite locus is given in the left-hand column, and the genotype of each individual is recorded as the number of repeats he or she carries at that locus. For example, at locus D9S302, the mother carries 30 repeats on one of her chromosomes and 31 on the other. In cases where an individual carries the same number of repeats on both chromosomes, only a single number is recorded. (Some of the numbers are followed by a decimal point, for example, 20.2, to indicate a partial repeat in addition to the complete repeats.) Assuming that these markers are inherited in a simple Mendelian fashion, can the alleged father be excluded as the source of the sperm that produced the child? Why or why not? Explain. Microsatellite Locus-…arrow_forward"Hybridization of a single-stranded DNA molecule attached to a fluorophore with a preparation of metaphase chromosomes that have been partially denatured" is a description of which laboratory method?arrow_forward
- A normal appearing female infant was identified with a positive newborn screen, linked to chromosome 12. Few years ago, her older sibling had developed profound hypoglycemia, liver failure leading to coma, and subsequent irreparable brain damage, following a viral illness. The sibling was subsequently shown by clinical testing to have the same disorder that this female infant is screened positive for. a. What is the most likely diagnosis? b. What biomarkers would confirm this on the newborn screening process? Describe the mechanism that causes this metabolic defect.arrow_forwardPlease answer asap and in short and content should not be palgarised pleasearrow_forwardAre you a hidden heterozygote? A PCR analysis (part2) Agarose gel electrophoresis and interpretation la: Several factors (including agarose gel concentration, time and current) affect migration of DNA fragments through the agarose gel. Briefly explain how each of these factors affects DNA migration. Agarose gel concentration: Time: Voltage: 1b: Do DNA fragments move towards the positive or negative end of the gel box? Explain your answer. 1c: What is the purpose of the Tris-Acetate-EDTA (TAE) buffer that the agarose gel is prepared with and submerged in for running? What would happen if you used water to prepare and run the gel instead of TAE buffer? 1d: If the student is homozygous for the brown allele, how many bands will they see in the lanes for the blue and brown allele samples? (circle one) Brown sample: 0 Blue sample: 1 2 more than two. 1 2 more than two. le: If the student is homozygous for the blue allele, how many bands will they see in the lanes for the blue and brown allele…arrow_forward
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