Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 7, Problem 4CONQ
What is the difference between an
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In 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 Y
What are the components needed for the processes of transformation, conjugation, and transduction? How does each process occur? What genes are involved in each process?
How do generalized and specialized transduction differ? What is the end result of each?
What are transgenic Bacteria? Illustrate using any one example?
Chapter 7 Solutions
Genetics: Analysis and Principles
Ch. 7.1 - 1. A form of genetic transfer that involves the...Ch. 7.2 - 1. A bacterial cell with an F factor conjugates...Ch. 7.2 - 2. Which of the following is a type of plasmid?...Ch. 7.3 - 1. With regard to conjugation, a key difference...Ch. 7.3 - 2. In mapping experiments, ______ strains are...Ch. 7.4 - Prob. 1COMQCh. 7.4 - Cotransduction may be used to map bacterial genes...Ch. 7.5 - Prob. 1COMQCh. 7.5 - Prob. 2COMQCh. 7.6 - 1. Which of the following is an example of...
Ch. 7 - 1. The terms conjugation, transduction, and...Ch. 7 - Prob. 2CONQCh. 7 - If you mix together an equal number of F+ and F...Ch. 7 - What is the difference between an F+ and an Hfr...Ch. 7 - 5. What is the role of the origin of transfer...Ch. 7 - 6. What is the role of sex pili during...Ch. 7 - Prob. 7CONQCh. 7 - Prob. 8CONQCh. 7 - Prob. 9CONQCh. 7 - 10. What is cotransduction? What determines the...Ch. 7 - Prob. 11CONQCh. 7 - Prob. 12CONQCh. 7 - Describe the steps that occur during bacterial...Ch. 7 - Prob. 14CONQCh. 7 - Prob. 15CONQCh. 7 - Antibiotics such as tetracycline, streptomycin,...Ch. 7 - Prob. 1EQCh. 7 - 2. In the experiment of Figure 7.1, Lederberg and...Ch. 7 - Explain how a U-tube apparatus can distinguish...Ch. 7 - Prob. 4EQCh. 7 - 5. In a conjugation experiment, what is meant by...Ch. 7 - In your laboratory, you have an F strain of E....Ch. 7 - 7. As mentioned in question 2 of More Genetic...Ch. 7 - An Hfr strain that is hisE+ and pheA+ was mixed...Ch. 7 - Acridine orange is a chemical that inhibits the...Ch. 7 - Prob. 10EQCh. 7 - Prob. 11EQCh. 7 - Lets suppose a new strain of P1 phage has been...Ch. 7 - If two bacterial genes are 0.6 minute apart on the...Ch. 7 - 14. In a cotransduction experiment involving P1,...Ch. 7 - Prob. 15EQCh. 7 - Prob. 16EQCh. 7 - 1. Discuss the advantages of the genetic analysis...Ch. 7 - Prob. 2QSDC
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- How Hfr strains allow genetic mapping of the E. coli chromosome ?arrow_forwardWhy would it have been possible to utilize N14 in the original bacteria and only allow growing bacteria to access N15 to build new (F1) bacteria and get the same results as the original Meselson experiment?arrow_forwardWhen performing phage typing, how would one know whether that bacterium is killed by any of the bacteriophages?arrow_forward
- In a conjugation experiment, what is meant by the time of entry? How is the time of entry determined experimentally?arrow_forwardWhat is recombination? What is the importance to bacteria & archaea? What are the two types of recombination? What are the details of each type? What components are needed for each type?arrow_forwardIf a vector containing the desired gene X is inserted into a microorganism, for instance, A.carbornarious, and the protoplast transformation resulted in 9 gene X transformants, how to determine which transformant has the highest titer of gene X?arrow_forward
- What two molecular mechanisms can result in gene conversion?Do both occur in the double-strand break model?arrow_forwardHow can I develop a vector to express a bacterial gene (2,500 bp in size) in E. coli. How do I know if the gene of interest is in the vector? What method can I use to get the vector into E. coli?arrow_forwardWhat are the components needed for the processes of transformation conjugation and transduction? How does each process occur? What genes are involved in each process?arrow_forward
- What is horizontal gene transfer? What are the three mechanisms for this to occur in bacteria? What are the components needed for the processes of transformation, conjugation, and transduction? How does each process occur? What genes are involved in each process? How do generalized and specialized transduction differ? What is the end result of each? What is recombination? What is the importance to bacteria & archaea? What are the two types of recombination? What are the details of each type? What components are needed for each type?arrow_forwardDescribe how an Hfr strain can transfer portions of the bacterial chromosome to recipient cells?arrow_forwardIn your laboratory, you have an F − strain of E. coli that is resistant to streptomycin and is unable to metabolize lactose, but it can metabolize glucose. Therefore, this strain can grow on media that contain glucose and streptomycin, but it cannot grow on media containing only lactose. A researcher has sent you two E. coli strains in two separate tubes. One strain, let’s call it strain A, has an F factor that carries the genes that are required for lactose metabolism. On its chromosome, it also has the genes that are required for glucose metabolism. However, it is sensitive to streptomycin. This strain can grow on media containing lactose or glucose, but it cannot grow if streptomycin is added to the media. The second strain, let’s call it strain B, is an F − strain. On its chromosome, it has thegenes that are required for lactose and glucose metabolism. StrainB is also sensitive to streptomycin. Unfortunately, when strains A and B were sent to you, the labels had fallen off the…arrow_forward
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