Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 23, Problem 2EQ
Summary Introduction
To review:
The relation between the probe and chromosomal DNA (deoxyribonucleic acid) in in-situ hybridization (ISH).
Introduction:
The technique used in the cytogenetic mapping of the genes is termed as ISH. This process is performed while the chromosomes are held or adhere to a surface. The chromosomes are hybridized to a labeled probe, which is detected by autoradiography or fluorescence technique.
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Chapter 23 Solutions
Genetics: Analysis and Principles
Ch. 23.1 - Prob. 1COMQCh. 23.2 - Prob. 1COMQCh. 23.3 - A molecular marker is a _____ found at a specific...Ch. 23.3 - 2. Which of the following is an example of a...Ch. 23.3 - To map the distance between molecular markers via...Ch. 23.4 - 1. What is a contig?
a. A fragment of DNA that...Ch. 23.4 - A vector that can carry a large fragment of...Ch. 23.4 - 3. Chromosomal walking is a method of _____ in...Ch. 23.5 - Prob. 1COMQCh. 23.5 - Prob. 2COMQ
Ch. 23.5 - 3. A prokaryotic genome is about 4 million bp in...Ch. 23.6 - Metagenomics is aimed at a. determining the...Ch. 23 - 1. A person with a rare genetic disease has a...Ch. 23 - For each of the following, decide if it could be...Ch. 23 - Which of the following statements about molecular...Ch. 23 - 1. Is each of the following a method used in...Ch. 23 - Prob. 2EQCh. 23 - Prob. 3EQCh. 23 - The cells from a persons malignant tumor were...Ch. 23 - 5. Figure 23.2 describes the technique of FISH....Ch. 23 - Explain how DNA probes with different fluorescence...Ch. 23 - 7. A researcher is interested in a gene found on...Ch. 23 - Prob. 8EQCh. 23 - Prob. 9EQCh. 23 - Prob. 10EQCh. 23 - Prob. 11EQCh. 23 - Prob. 12EQCh. 23 - In the Human Genome Project, researchers have...Ch. 23 - 14. Take a look at question 3 in More Genetic...Ch. 23 - 15. Place the following stages of a physical...Ch. 23 - 16. What is an STS? How are STSs generated...Ch. 23 - 17. Four cosmid clones, which we will call cosmids...Ch. 23 - A human gene, which we will call geneX, is located...Ch. 23 - 19. Describe how you would clone a gene by...Ch. 23 - 20. A bacterium has a genome size of 4.4 Mb. If a...Ch. 23 - 21. Discuss the advantages of next-generation...Ch. 23 - Prob. 22EQCh. 23 - Prob. 23EQCh. 23 - What is a molecular marker? Give two examples....Ch. 23 - Which goals of the Human Genome Project do you...
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- "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_forwardExplain how agarose electrophoresis separates DNA fragments. Why does a smaller DNA fragment move faster than a larger one?arrow_forwardIn gel electrophoresis, are the DNA fragments attracted to, or repelled from the negative pole of the electric field? The positive pole? Why are these attractions and repulsions important to the process?arrow_forward
- During agarose gel electrophoresis, why does DNA move through the gel when electric current is applied? because DNA is negatively charged because a charged chemical from the loading buffer is bound to the DNA because DNA is positively charged because DNA absorbs electricityarrow_forwardWhat is the cause of an extra band in a DNA ladder in agarose gel electrophoresis?arrow_forwardWhen cloning a piece of DNA, the purpose of using the LacZ blue-white colony method is to A) Remove bacteria that do not have recombinant vectors B) Remove bacteria that do not have the DNA insert of interest Remove linear DNA Distinguish colonies that have recombinant vectors from those with non-recombinant vectors. E) Remove bacteria that have not taken up the vectorarrow_forward
- The technique of fluorescence in situ hybridization (FISH) is described. This is another method for examining sequence complexity within a genome. In this method, a DNA sequence, such as a particular gene sequence, can be detected within an intact chromosome by using a DNA probe that is complementary to the sequence.For example, let’s consider the β-globin gene, which isfound on human chromosome 11. A probe complementary to theβ-globin gene binds to that gene and shows up as a brightly colored spot on human chromosome 11. In this way, researchers can detectwhere the β-globin gene is located within a set of chromosomes. Becausethe β-globin gene is unique and because human cells are diploid(i.e., have two copies of each chromosome), a FISH experimentshows two bright spots per cell; the probe binds to each copy ofchromosome 11. What would you expect to see if you used thefollowing types of probes?A. A probe complementary to the Alu sequenceB. A probe complementary to a tandem array near…arrow_forwardWhat is linker scanning mutagenesis?arrow_forwardWhat is the rationale for the salting out technique for DNA extraction?arrow_forward
- How does gel electrophoresis separate DNA fragments of your unknown sample and How will you be able to track the distance travelled by the DNA during electrophoretic run?arrow_forwardAmplified target regions of four different samples were separated using gel electrophoresis. DNA fragments labeled with the isotope P32 were separated by gel electrophoresis. The ultimate reason why unique target regions within each sample separate from each other in the gel is due to Amplified target regions of four different samples were separated using gel electrophoresis. DNA fragments labeled a) the amount of P32 bonded to each fragment. b) the number of restriction sites in each fragment. c) the distance between the primer recognition sites. d) the number of positive charges in each fragment.arrow_forwardHow are DNA molecules visualized in a gel after electrophoresis? Why do DNA molecules migrate toward the + electrode? What determines the rate of their migration? What is the effect of PEG on DNA fragments of different sizes? How is this influenced by the concentration of PEG?arrow_forward
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