Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 3AQ
Why is it difficult in a single experiment to transfer a large number of genes to a recipient cell using transformation or transduction?
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When an E. coli donor cell duplicates a strand of plasmid DNA, and passes this DNA strand to a recipient E. coli cell, without the use of naked DNA in solution or of a viral vector, this is:
an example of horizontal gene transfer by means of lysogenic bacteriophages
an example of horizontal gene transfer by means of lytic bacteriophages
an example of horizontal gene transfer by means of transformation
an example of horizontal gene transfer by means of transduction
an example of horizontal gene transfer by means of conjugation
We have two specific strains of E. coli that have shown horizontal gene transfer (HGT) when mixed. To experimentally determine the method of HGT that is happening, the following conditions are set up in different tubes of culture media:
A) Donor and recipient strain mixed together (control - no treatment).
B) Donor and recipient strains mixed together, DNase added (can digest DNA in solution, not within cells).C) Special tube containing a membrane filter (with pores that allow DNA and viruses to pass through, but not bacterial cells) that separates two compartments. Donor strain is added on one side, the recipient strain on the other (they are separated by the filter).D) Donor and recipient strains mixed together, with chemical that inactivates viruses (chemical affects bacteriophages in solution so they are unable to attach to cells).
The results:
Tubes A, B, and D: HGT was observed.
Tube C: HGT was NOT observed.
Based on this, which type of HGT was occurring?
Conjugation,…
In a transformation experiment involving a wild type bacterial strain with a recipient strain with mutations in genes f,
g, h and i pairs of genes were analyzed for co-transformation with the following results:
Gene Pair
Co-transformation
g+ i+
f+ i+
yes
no
f+ h+
Уes
f+ g+
no
g+ h+
h+ i+
no
уes
What is the linear order of these genes relative to cach other?
Chapter 10 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 10.1 - Distinguish between a mutation and a mutant.Ch. 10.1 - Distinguish between screening and selection.Ch. 10.2 - Do missense mutations occur in genes encoding...Ch. 10.2 - Why do frameshift mutations generally have more...Ch. 10.3 - Why does the Ames test measure the rate of...Ch. 10.3 - Which class of mutation, missense or nonsense, is...Ch. 10.4 - Prob. 1MQCh. 10.4 - Prob. 2MQCh. 10.4 - Prob. 3MQCh. 10.5 - Prob. 1MQ
Ch. 10.5 - Prob. 2MQCh. 10.5 - Prob. 3MQCh. 10.6 - During transformation a cell usually incorporates...Ch. 10.6 - Prob. 2MQCh. 10.7 - Prob. 1MQCh. 10.7 - What is the major difference between generalized...Ch. 10.7 - Why is phage conversion considered beneficial to...Ch. 10.8 - In conjugation, how are donor and recipient cells...Ch. 10.8 - Explain how rolling circle DNA replication allows...Ch. 10.8 - Prob. 3MQCh. 10.9 - In conjugation involving the F plasmid of...Ch. 10.9 - Prob. 2MQCh. 10.9 - Prob. 3MQCh. 10.10 - Why is it usually more difficult to select...Ch. 10.10 - Why do penicillins not kill species of Archaea?Ch. 10.11 - Prob. 1MQCh. 10.11 - What is the significance of the terminal inverted...Ch. 10.11 - How can transposons be used in bacterial genetics?Ch. 10.12 - Why is the CRISPR system considered a prokaryotic...Ch. 10.12 - Prob. 2MQCh. 10 - Write a one-sentence definition of the term...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - What are heteroduplex regions of DNA and what...Ch. 10 - QExplain why recipient cells do not successfully...Ch. 10 - QExplain how a generalized transducing particle...Ch. 10 - QWhat is a sex pilus and which cell type, F or F+,...Ch. 10 - Prob. 10RQCh. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - QExplain why incoming DNA recognized by a short...Ch. 10 - A constitutive mutant is a strain that...Ch. 10 - Although a large number of mutagenic chemicals are...Ch. 10 - Why is it difficult in a single experiment to...Ch. 10 - Prob. 4AQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In PCR , the primers will determine which gene will amplified (copied) . in lab we’re doing qRT- PCR using PAL primers and pair of primers for an RRNA gene what would happen is we setup a PCA and used primers for myostatin - what gene would be amplified (copied) ? A) any gene could be Amplified B) myostatin C) PAL D) no gene would be amplifiedarrow_forwardYou mix two auxotrophic strains of bacteria; one is leu+ trp+ his– met– and the other is leu– trp– his+ met+. After mixing the two strains, you plate the bacteria on minimal medium and observe a few prototrophic colonies (leu+ trp+ his+ met+). To determine whether gene transfer has occurred through conjugation, transformation, or transduction, you design an experiment in which you place filters between the two strains to see if gene transfer occurs. You set up three treatments:-Treatment A No filter, allowing contact between the bacterial strains-Treatment B Filter that blocks cells, but allows viruses and DNA through the filter-Treatment C Filter that blocks cells and viruses, but allows DNA through the filter When you check the results of your experiment, you find prototrophic colonies have occurred following treatments A and B, but not following treatment C. You conclude that gene transfer occurred through... Answer Choices Available: A) Conjugation B) Transformation C)…arrow_forwardFollowing are four processes common to most cloning experiments: a) transforming bacteria b) plating bacteria on selective medium c) cutting DNA with restriction endonucleases d) ligating DNA fragments Place components of this list in the order in which they would most likely occur during a cloning experiment.arrow_forward
- Why is the technique used to clone mammals called somatic cellnuclear transfer?arrow_forwardThe following DNA sequence is from a bacteriophage that infects a pathogenic bacterium and scientists want to know if this bacteriophage could prove to be a potential treatment against it. But first scientists need to discover if different strains of this pathogen have restriction endonucleases that it may use for its own protection. They try 3 different RE’s:a) EcoR1 b) HaeIII c) BamH1 Look up the recognition sequences for the 3 Res. Enzymes above and check whether the phage genome (a snippet of which is shown below) will or will not be ‘cut’. Tell me how their experiment worked out and what their conclusion was.G A A A A G G C C A C A A G G C C G T C G A C T T T T A A A A G G C C A C A T G C G G C T T T T C C G G T G T T C C G G C AG C T GA A A AT T T T C C G G T G T A C G CCarrow_forwardWhat is artificial transformation used for?arrow_forward
- What would be an advantage of using HaeIII for a cloning experiment? What would be a disadvantage?arrow_forwardDo all of them True/False 31) The process by which an electrical charge is used to introduce DNA into a cell to produce a transgenic organism is called electroporation.Answer: 32) Reproductive cloning is used to produce large amounts of mammalian proteins from transgenic agricultural animals such as cattle.Answer: 33) In gene addition, homologous recombination is used to remove the original gene and replace it with the cloned gene.Answer: 34) All stem cells have the potential to differentiateAnswer: 35) A bone marrow transplant involves the transfer of multipotent stem cellsAnswer: 36) The fact that in mammalian systems multiple genes may compensate for the loss of a gene is called gene redundancy.Answer:arrow_forwardIn five Hfr strains, each of which was used to build a time-of-transfer map, the genes entered the recipient cells as follows: Strain 1: S L A C T F Strain 2: N P F T C A Strain 3: T F P N U Y Strain 4: S H Y U N P Strain 5: U N P F T C Which of the following represents a correct gene map of these results? N P F T S L A C H U Y S L A C T F P N H Y U C T F P N U Y H S L A T C A L S P N U Y H F U N P C A L S F T H Yarrow_forward
- A donor strain of bacteria with alleles a* b* c* is infected with phages to map the donor chromosome using generalized transduction. The phage lysate from the bacterial cells is collected and used to infect a second strain of bacteria that are a b c. Bacteria with the a* allele are selected, and the percentage of cells with cotransduced b* and c* alleles are recorded. Selected Cells with cotransduced Donor Recipient allele allele (%) a* b* a b c a* 25 b* c* a* 3 c* Is gene b or gene c closer to gene a? Explain your reasoning.arrow_forwardA donor strain of bacteria with alleles a+ b+ c+ is infected with phages to map the donor chromosome using generalized transduction. The phage lysate from the bacterial cells is collected and used to infect a second strain of bacteria that are a− b− c−. Bacteria with the a+ allele are selected, and the percentage of cells with cotransduced b+ and c+ alleles are recorded. Donor Recipient Selected allele Cells with cotransduced allele (%) a+ b+ c+ a− b− c− a+ 25 b+ a+ 3 c+ Is gene b or gene c closer to gene a? Explain your reasoning.arrow_forwardWhat is gene cloning? What is bacterial transformation? What is the difference between the two different methods?arrow_forward
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