Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 7R
List at least two examples of the use of rDNA in medicine and in agriculture.
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What makes the species of Agrobacterium ideal for genetic engineering? Describe its characteristics and its role in producing transgenic plants.
Compare and contrast selective breeding with rDNA technology. Describe a minimum of three (3) advantages to rDNA technology. (Relates to GMOS)
In bacterial transformation, the purpose of having antibiotic within an agar plate is to:
Select one:
confirm which plasmids been have successfully ligated with a gene of interest.
isolate bacteria which have been successfully transformed with the plasmid.
indicate which plasmids were successfully digested by the endonuclease.
act as a substrate which will be cleaved and produce a blue product when ligation is unsuccessful.
show which plasmids contain the lacZ gene.
Chapter 9 Solutions
Microbiology: An Introduction
Ch. 9 - Compare and contrast the following terms: a. cDNA...Ch. 9 - Differentiate the following terms. Which one is...Ch. 9 - Some commonly used restriction enzymes are listed...Ch. 9 - Suppose you want multiple copies of a gene you...Ch. 9 - Which enzyme makes the smallest fragment...Ch. 9 - Describe a recombinant DNA experiment in two or...Ch. 9 - List at least two examples of the use of rDNA in...Ch. 9 - You are attempting to insert a gene for saltwater...Ch. 9 - How does RNAi silence a gene?Ch. 9 - Prob. 10R
Ch. 9 - Restriction enzymes were first discovered with the...Ch. 9 - The DNA probe, 3-GGCTTA, will hybridize with which...Ch. 9 - Which of the following is the fourth basic step to...Ch. 9 - The following enzymes are used to make cDNA. What...Ch. 9 - If you put a gene in a virus, the next step in...Ch. 9 - You have a small gene that you want replicated by...Ch. 9 - Pieces of human DNA stored in yeast cells. a....Ch. 9 - A population of cells carrying a desired plasmid....Ch. 9 - Self-replicating DNA for transmitting a gene from...Ch. 9 - A gene that hybridizes with mRNA. a. antisense b....Ch. 9 - Design an experiment using vaccinia virus to make...Ch. 9 - Why did the use of DNA polymerase from the...Ch. 9 - The following picture shows bacterial colonies...Ch. 9 - Prob. 1CAECh. 9 - Using the restriction enzyme ECORI, the following...
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- In recombinant DNA technology, vectors are used to transfer a gene of interest in the host cells. Mention any three features of vectors that are most suitable for this purpose.arrow_forwardBriefly explain the role of arabinose in the expression of the GFP gene of the pGLO plasmid.arrow_forwardThe modifiedplasmid is reintroduced back into Rhizobium(step 4) and the genetically transformed bacteria are then selected based on the amp and lacZgenes present within the plasmid. The plasmid may or may not integrate the BBW resistancegene. The treated bacteria may or may not take up the modified plasmid. a) Complete the table below with a yes or no in each space stating whether you would expect these bacteria to grow or not. Type of treated bacteria culture plate(no amp) Culture plate treated with ampicillin Plasmid not taken up Plasmid taken up (WithoutBBW resistancegene) Plasmid taken up (WithBBW resistancegene) B) Outline how the genetically transformed bacteria containing the BBW resistance gene can beselected based on the amp and lacZgenes present within the plasmid.arrow_forward
- state two ways one can extract an insert from a plasmidarrow_forwardDescribe the benefits of using bacteria, yeast, mammalian and insect cells to make recombinant protein. Explain why the B-galactosidase gene is made in two pieces with the a and 2 parts of the enzyme.arrow_forwarddescribe each step carefully and use your own words. Steps will be like following; I) Primer design for SLIC cloning and the protocol II) Transformation and sequence validation of the clones III) Culture of HEK293T IV) Transduction of HEK293T cells with plasmid V) Western Blotting VI) Immunfluorescence for Confocal Microscopyarrow_forward
- Describe the molecular features of a BAC cloning vector. What is theprimary advantage of a BAC vector over a plasmid or viral vector?arrow_forwardWhen using a conventional plasmid cloning vector containing a b-galactosidase gene, it is possible to perform a "blue-white screen" to determine which bacteria have taken up a plasmid into which a DNA fragment as been inserted, as opposed to those that have taken up just reclosed plasmid vector, by growing the transformed cells on nutrient agar plates containing the artificial b-gal substrate X-gal. Will bacteria that have taken up a plasmid into which a DNA fragment has been inserted form a blue colony or a white colony when grown on this medium? Briefly explain why these bacteria would form a colony of the color you chose.arrow_forwardPlease answer in detailarrow_forward
- Describe in detail how blue/white screening works in bacteria. As part of your description explain why you need both antibiotic selection and blue/white screening to ensure that you not only have the plasmid in the bacteria but the DNA inserted into the plasmid. A diagram might be helpful to illustrate your explanation. Please have sufficient depth for the solution.arrow_forwardTransduction is sometimes described as a mistake in the bacteriophage reproductive cycle. Explain how it can be viewed as a mistake.arrow_forwardJackson 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_forward
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