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 20, Problem 14PDQ
Summary Introduction
To determine: The advantages of the cDNA libraries over genomic DNA libraries.
Introduction: A cDNA (complementary deoxyribonucleic acid) library can be created by inserting cDNA into a vector and cloning it. A genomic DNA library is a collection of the total genomic DNA content of an organism.
Summary Introduction
To determine: The application of cloning where the use of a genomic library is necessary to provide the information that a cDNA library cannot.
Introduction: cDNA is a population of RNA. cDNA can be inserted into vectors and cloned to create the cDNA libraries. On the other hand, a genomic library contains the DNA fragments that represent the entire genome of an organism.
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Chapter 20 Solutions
Concepts of Genetics (12th Edition)
Ch. 20 - A plasmid that is both ampicillin and tetracycline...Ch. 20 - You have just created the worlds first genomic...Ch. 20 - What undesirable or unforeseen consequences might...Ch. 20 - Do we have the ethical right to alter the genomes...Ch. 20 - Should these new technologies be regulated...Ch. 20 - HOW DO WE KNOW? In this chapter we focused on how...Ch. 20 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 20 - What roles do restriction enzymes, vectors, and...Ch. 20 - The human insulin gene contains a number of...Ch. 20 - Although many cloning applications involve...
Ch. 20 - Using DNA sequencing on a cloned DNA segment, you...Ch. 20 - Restriction sites are palindromic; that is, they...Ch. 20 - List the advantages and disadvantages of using...Ch. 20 - What are the advantages of using a restriction...Ch. 20 - In 1975, the Asilomar Conference on Recombinant...Ch. 20 - In the context of recombinant DNA technology, of...Ch. 20 - If you performed a PCR experiment starting with...Ch. 20 - Prob. 13PDQCh. 20 - Prob. 14PDQCh. 20 - You have recovered a cloned DNA segment from a...Ch. 20 - Prob. 16PDQCh. 20 - Although the capture and trading of great apes has...Ch. 20 - Prob. 18PDQCh. 20 - Prob. 19PDQCh. 20 - Prob. 20PDQCh. 20 - Traditional Sanger sequencing has largely been...Ch. 20 - How is fluorescent in situ hybridization (FISH)...Ch. 20 - What is the difference between a knockout animal...Ch. 20 - Prob. 24PDQCh. 20 - When disrupting a mouse gene by knockout, why is...Ch. 20 - Prob. 26PDQCh. 20 - Prob. 27PDQCh. 20 - As you will learn later in the text (Special...Ch. 20 - The gel presented here shows the pattern of bands...Ch. 20 - A widely used method for calculating the annealing...Ch. 20 - Most of the techniques described in this chapter...Ch. 20 - In humans, congenital heart disease is a common...Ch. 20 - The U.S. Department of Justice has established a...Ch. 20 - Prob. 34ESP
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- Briefly explain how synthetic probes are created to screen a DNA library when the protein encoded by the gene is known.arrow_forwardDescribe the difference between Sanger based sequencing and Next Generation Sequencing (NGS). Why is NGS advantageous over Sanger based sequencing?arrow_forwardA DNA library is a collection of clones, each containing a different fragment of DNA, inserted into a cloning vector. What is the difference between a cDNA library and a genomic DNA library?arrow_forward
- List the steps to make a genomic library. What steps would change if you wanted to make a cDNA library instead?arrow_forwardThe 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_forwardTranscriptome analysis involves two separate methodologies: gene expression and RNA seq analyses. The 10 items below are a scrambled listing of the steps used in the two procedures. Identify the steps involved in RNA seq from the list below. Use the numbers in the list to refer to each step. Once the steps for RNA seq have been identified, write the steps in the order in which they are performed during the experiment. (1) DNA sequencing (2) Allow for hybridization and wash excess cRNA. (3) Mix labeled cRNA with array chip. (4) PCR amplification (5) Measure fluorescence intensity to determine abundance of transcripts. (6) Add labeled cRNA at each microarray location. (7) Map cDNA sequences to the genome of the organism to determine identity and abundance of transcripts. (8) mRNA isolation from cells (9) Prepare fluorescently labeled cRNA probes (10) cDNA synthesisarrow_forward
- Whole-exome sequencing (WES) is helping physicians diagnose a genetic condition that has defied diagnosis by traditional means. The implication here is that exons in the nuclear genome are sequenced in the hopes that, by comparison with the genomes of nonaffected individuals, a diagnosis might be revealed. (a) What are the strengths and weaknesses of this approach? (b) If you were ordering WES for a patient, would you also include an analysis of the patient’s mitochondrial genome?arrow_forwardYou are trying to study the effects of Drug A on the expression of Gene X in a tumor sample (lane 3). You perform an RT- PCR reaction using a set of prímers to amplify a region of Gene X that is about 600bp in length. The forward and reverse primers are on 2 separate exons. You run your target CDNA fragment on an agarose gel (lane 3). Lanes 1 and 2 are hypothetical control lanes to test for 9DNA contamination. 1 3 1000 bp 600 bp Based on the gel image, which of the following statements is correct? 1. The samples loaded in lanes 1 and 2 were not reverse transcribed prior to PCR. 2. Results from lane 2 suggest that 9DNA contamination is present. 3. The upper band in lane 2 represents 9DNA. 4. The fact that lane 1 is blank is indicative that Drug A doesn't lead to expression of Gene X. O A. 1, 2, and 3 O B. 1 and 3 O C. 2 and 4 O D. 4 only O E. All of 1, 2, 3 and 4 are correctarrow_forwardHuman genomic libraries used for DNA sequencing are often made from fragments obtained by cleaving human DNA with Haeiii in such a way that the DNA is only partially digested; that is, not all the possible HaeIII sites have been cleaved. What is a possible reason for doing this?arrow_forward
- Jackson Wang is a biologist working with the genetics of a thermophilic bacterium. He cloned a heat shock gene from the bacteria for further analysis. After cloning, he isolated the plasmid carrying his gene of interest for sequencing. Jackson finally received the nucleotide sequence of his gene. Explain in detail how he could verify whether the nucleotide sequence matches his gene of interest using the bioinformatics databases available.arrow_forwardWhat are cDNA libraries.?arrow_forwardWhat does gene shuffling mean, how is it done? What is it used for? What advantages does it have in biotechnology? Explain briefly.arrow_forward
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