ESSENTIALS OF GENETICS-MODIFIED ACCESS
9th Edition
ISBN: 9780134190006
Author: KLUG
Publisher: PEARSON
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Chapter 8, Problem 5PDQ
List all of the differences between F+
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Describe the basis for chromosome mapping in the Hfr * F- crosses.
When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?Hfr Strain Order1 T C H R O2 H R O M B3 M O R H C4 M B A K T5 C T K A B
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Chapter 8 Solutions
ESSENTIALS OF GENETICS-MODIFIED ACCESS
Ch. 8 -
CASE STUDY | To treat or not to treat
A...Ch. 8 - CASE STUDY | To treat or not to treat A...Ch. 8 - Prob. 3CSCh. 8 - Prob. 4CSCh. 8 - HOW DO WE KNOW? In this chapter, we have focused...Ch. 8 -
CONCEPT QUESTION
2. Review the Chapter Concepts...Ch. 8 -
3. Distinguish among the three modes of...Ch. 8 - With respect to F+ and F- bacterial matings, (a)...Ch. 8 - List all of the differences between F+ × F– and...Ch. 8 - Describe the basis for chromosome mapping in the...
Ch. 8 - Why are the recombinants produced from an Hfr × F–...Ch. 8 - Describe the origin of F' bacteria and...Ch. 8 -
9. Describe the mechanism of transformation.
Ch. 8 - .
10. The bacteriophage genome consists primarily...Ch. 8 - Prob. 11PDQCh. 8 - In the plaque assay, what is the precise origin of...Ch. 8 -
13. In the plaque assay, exactly what makes up a...Ch. 8 - A plaque assay is performed beginning with 1.0 mL...Ch. 8 -
15. Describe the difference between the lytic...Ch. 8 - Prob. 16PDQCh. 8 -
17. Explain the observations that led Zinder and...Ch. 8 -
18. Describe the execution of and rationale...Ch. 8 - If a single bacteriophage infects one E. coli cell...Ch. 8 - A phage-infected bacterial culture was subjected...
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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
- Compare and contrast conjugation involving an F+ donor, an Hfr strain, and an F' donor.arrow_forwardA particular Hfr strain normally transmits the pro+marker as the last one in conjugation. In a cross of thisstrain with an F− strain, some pro+ recombinants are recovered early in the mating process. When these pro+cells are mixed with F−cells, the majority of the F− cellsare converted into pro+ cells that also carry the F factor.Explain these results.arrow_forwardAn Hfr strain that is leuA+ and thiL+ was mixed with a strain thatis leuA− and thiL−. In the data points shown in the following graph,the conjugation was interrupted at different time points, and thepercentage of recombinants for each gene was determined bystreaking on a medium that lacked either leucine or thiamine.What is the map distance (in minutes) between these two genes?arrow_forward
- What is the result of conjugation between F and F cells?arrow_forwardWith the technique of interrupted mating four Hfr strains were tested for the sequence in which they transmitted a number of different genes to an F strain. Each Hfr strain was found to transmit its genes is a unique sequence, as shown in the accompanying table. What is the gene sequence in the original strain from which these Hfr strains were derived?arrow_forwardList all major differences between (a) the F+ * F- and the Hfr * Fbacterialcrosses; and (b) the F+, F-, Hfr, and F' bacteria.arrow_forward
- When the interrupted mating technique was used withfive different strains of Hfr bacteria, the following orders ofgene entry and recombination were observed. On the basisof these data, draw a map of the bacterial chromosome.Do the data support the concept of circularity?HfrStrain Order1 T C H R O2 H R O M B3 M O R H C4 M B A K T5 C T K A Barrow_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_forwardA donor strain of bacteria with genotype leu+ gal− pro+ is infected with phages. The phage lysate from the bacterial cells is collected and used to infect a second strain of bacteria that are leu− gal+ pro−. The second strain is selected for leu+, and the following cotransduction data are obtained: Donor Recipient Selected allele Cells with cotransduced allele (%) leu+ gal− pro+ leu− gal+ pro− leu+ 47 pro+ leu+ 26 gal− Which genes are closest, leu and gal or leu and pro?arrow_forward
- What characteristic specifically defines a High Frequency Recombination (HFr) cell line?arrow_forwardThree different Hfr donor strains are mixed with separate samples of an F− strain, and the following mapping data are provided from studies of interrupted conjugation: Appearance of genes in F − cells Hfr1: Genes b+ d+ c+ f+ g+ Time* 3 5 16 27 59 Hfr2: Genes e+ f+ c+ d+ b+ Time 6 24 35 46 48 Hfr3: Genes d+ c+ f+ e+ g+ Time 4 15 26 44 58 Construct a genetic map for these genes, indicating their order on the bacterial chromosome and the distances between them.arrow_forwardAn Hfr strain that is leuA+ and thiL+ was mixed with a strain thatis leuA− and thiL−. In the data points shown in the following graph,the conjugation was interrupted at different time points, and thepercentage of recombinants for each gene was determined bystreaking on a medium that lacked either leucine or thiamine.What information do you know based on the question and your understanding of the topic?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