Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 22, Problem 2CONQ
Summary Introduction
To review:
The prevention of crown gall disease with the help of bacteria Agrobacterium radiobacter and the advantage of conjugation-deficient strain.
Introduction:
The crown gall disease is caused when bacteria causes infection in plants and due to those infections, lumpy swellings are observed, which are known as galls. The infection is caused on stems, roots, branches, and trunks. The crown gall disease is observed in the roots and stems of herbaceous and woody plants.
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A conjugation-deficient strain of A. radiobacter is used to combat crown gall disease. Explain how this bacterium prevents the disease, and describe the advantage of using a conjugation-deficient strain.
Give three reasons why Salmonella strains are very useful for mutagenesis studies.
Compare and contrast conjugation involving an F+ donor, an Hfr strain, and an F' donor.
Chapter 22 Solutions
Genetics: Analysis and Principles
Ch. 22.1 - 1. Which of the following uses of microorganisms...Ch. 22.1 - Prob. 2COMQCh. 22.1 - Prob. 3COMQCh. 22.2 - When a cloned gene is inserted into a noncritical...Ch. 22.2 - Prob. 2COMQCh. 22.3 - Prob. 1COMQCh. 22.3 - Prob. 2COMQCh. 22.4 - Prob. 1COMQCh. 22.4 - Prob. 2COMQCh. 22.5 - A means of introducing a cloned gene into cells...
Ch. 22.5 - 2. Which of the following best describes the...Ch. 22 - 1. What is a recombinant microorganism? Discuss...Ch. 22 - Prob. 2CONQCh. 22 - 3. What is bioremediation? What is the difference...Ch. 22 - Prob. 4CONQCh. 22 - Prob. 5CONQCh. 22 - Prob. 6CONQCh. 22 - 7. What is a transgenic organism? Describe three...Ch. 22 - Prob. 8CONQCh. 22 - Explain the difference between gene modification...Ch. 22 - As described inChapter 5, not all inherited traits...Ch. 22 - Prob. 11CONQCh. 22 - 12. Discuss the concerns that some people have...Ch. 22 - Prob. 1EQCh. 22 - 2. Bacillus thuringiensis makes toxins that kill...Ch. 22 - Prob. 3EQCh. 22 - Prob. 4EQCh. 22 - Prob. 5EQCh. 22 - What is a gene knockout? Is an animal or plant...Ch. 22 - Prob. 7EQCh. 22 - Evidence [see P. G. Shiels, A. J. Kind, K. H....Ch. 22 - Prob. 9EQCh. 22 - 10. What is reproductive cloning? Are identical...Ch. 22 - Researchers have identified a gene in humans that...Ch. 22 - Treatment of adenosine deaminase (ADA) deficiency...Ch. 22 - Several research studies are under way that...Ch. 22 - Prob. 1QSDCCh. 22 - 2. A commercially available strain of P....Ch. 22 - Prob. 3QSDC
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- Describe the differences between the F factor and Hfr transfer. Include how the donor and recipient are affected in each type of conjugation.arrow_forwardWhat is micropropogation? Mention its advantages.arrow_forwardWhen T4 phage isolated from E. coli strain B infect E. coli strain K, what will be the EOP (efficient of plating)? Explain why. Fe Varrow_forward
- Results from a Kirby Bauer antibiotic assay on a Gram-negative bacterial culture are described as follows: A) the bacterium is resistant to penicillin, an antibiotic that targets synthesis of the peptidoglycan cell wall and B) the bacterium is resistant to tetracycline, an antibiotic that targets the small subunit of the ribosome, inhibiting protein synthesis. Which of the results represents intrinsic resistant and which represents acquired resistants?arrow_forwardWhich of the following is TRUE when one assay bacteriophage titers? You should: a) first mix the phages with a live bacterial culture and then pour the mixture on the agar plate b) directly add the phage dilution onto the surface of an agar plate c) add tryptic soy broth to the phage dilution and incubate overnight d) incubate a phage solution with live bacterial cells for several minutes. You must add soft agar to the mixture before pouring the content on the agar platearrow_forwardBriefly explain the process of bacterial conjugation, and explain how it is different from conjugation in humans.arrow_forward
- Describe ,A Hfr bacterium mates with an F- plasmid containing bacterium. What will be the type of bacteria after conjugation is complete?arrow_forwardIn 1944, Avery, Macleod, and McCarty provided strong evidence that DNA is the hereditary material in Streptococcus pneumoniae by Group of answer choices showing that avirulent cells could become virulent by the process of transduction none of these is true. showing that virulent cells could become avirulent if the DNA was destroyed after transformation showing that avirulent cells could not gain the ability to become virulent cells if conjugation was interrupted. showing that avirulent cells could not gain the ability to become virulent if DNA was destroyed after transformation.arrow_forwardType S Streptococcus pneumoniae bacterium is lethal and will kill its host. If heat inactivated the S strain dies and becomes nonlethal. Type R Streptococcus pneumoniae is a nonvirulent strain of bacteria. What would occur if one were to inject both the R strain and heat-killed S strains into a host organism such as the mouse? The R strain would be transformed into the virulent S strain and kill the host. Neither the S nor the R strain would change. The R strain would be transformed into the virulent S strain and not affect the host. The S strain would be transformed into the nonvirulent R strain and not affect the host The S strain would be transformed into the nonvirulent R strain and kill the host.arrow_forward
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license