First picture: 1. What must be added in a minimal media for the recombinants to grow? 2. What must be excluded in a minimal media for the non recombinants to be killed? Second picture: 1. How is the recipient cell different at time D than it was at time A? Choice 1:It has a greater number of genes Choice 2: It has a greater mass of DNA. Choice 3:It contains different genes Choice 4: It contains bacteriophage DNA.   2. At which time can the recipient cell first be described as "recombinant"?

Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter3: Basic Hemostasis
Section3.6: D-dimers
Problem 1.2CS
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First picture:

1. What must be added in a minimal media for the recombinants to grow?

2. What must be excluded in a minimal media for the non recombinants to be killed?

Second picture:

1. How is the recipient cell different at time D than it was at time A?

Choice 1:It has a greater number of genes
Choice 2: It has a greater mass of DNA.
Choice 3:It contains different genes
Choice 4: It contains bacteriophage DNA.
 
2. At which time can the recipient cell first be described as "recombinant"?
 
A,B,C, or D
 
3. Which of the following processes is responsible for the shape of the curve at time B?
 
Choice 1:transduction
Choice 2:another choice
Choice 3:entry of Hfr DNA into the recipient cell
Choice 4:entry of DNA from the recipient cell into the Hfr cell
 
You cross an Hfr strain of ala+ his- val+ genotype with an F-strain of ala- his+ val- genotype and
wish to recover F- ala+his+val- recombinants. Which media should you use that will allow the
recombinants to grow and form colonies but not allow growth of the two parental strains?
Note the abbreviations for the amino acids:
his histidine
=
ala = alanine
val = valine
Transcribed Image Text:You cross an Hfr strain of ala+ his- val+ genotype with an F-strain of ala- his+ val- genotype and wish to recover F- ala+his+val- recombinants. Which media should you use that will allow the recombinants to grow and form colonies but not allow growth of the two parental strains? Note the abbreviations for the amino acids: his histidine = ala = alanine val = valine
Use the following information and graph to answer the question. The figure depicts changes to the
amount of DNA present in a recipient cell that is engaged in conjugation with an Hfr cell. Hfr cell
DNA begins entering the recipient cell at time A. Assume that a fragment of the recipient cell's
chromosome is exchanged for a homologous fragment from the Hfr cell's DNA.
Amount of DNA
present in
recipient cell
A
B
C
Time
D
Transcribed Image Text:Use the following information and graph to answer the question. The figure depicts changes to the amount of DNA present in a recipient cell that is engaged in conjugation with an Hfr cell. Hfr cell DNA begins entering the recipient cell at time A. Assume that a fragment of the recipient cell's chromosome is exchanged for a homologous fragment from the Hfr cell's DNA. Amount of DNA present in recipient cell A B C Time D
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