A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pst l, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with Pst l-digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12. (a) Which antibiotic should be added to the medium to select cells that have incorporated a plasmid? (b) If recombinant cells were plated on medium containing ampicillin or tetracycline and medium with both antibiotics, on which plates would you expect to see growth of bacteria containing plasmids with Drosophila DNA inserts? (c) How can you explain the presence of colonies that are resistant to both antibiotics?

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 20, Problem 1NST

A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with Pstl-digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12.

Chapter 20, Problem 1NST, A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves

(a) Which antibiotic should be added to the medium to select cells that have incorporated a plasmid?
(b) If recombinant cells were plated on medium containing ampicillin or tetracycline and medium with both antibiotics, on which plates would you expect to see growth of bacteria containing plasmids with Drosophila DNA inserts?
(c) How can you explain the presence of colonies that are resistant to both antibiotics?

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

what key characteristics would you look for when identifying microbes?

If you had an unknown microbe, what steps would you take to determine what type of microbe (e.g., fungi, bacteria, virus) it is? Are there particular characteristics you would search for? Explain.

avorite Contact avorite Contact favorite Contact ୫ Recant Contacts Keypad Messages Pairing ง 107.5 NE Controls Media Apps Radio Nav Phone SCREEN OFF Safari File Edit View History Bookmarks Window Help newconnect.mheducation.com M Sign in... S The Im... QFri May 9 9:23 PM w The Im... My first.... Topic: Mi Kimberl M Yeast F Connection lost! You are not connected to internet Sigh in... Sign in... The Im... S Workin... The Im. INTRODUCTION LABORATORY SIMULATION Tube 1 Fructose) esc - X Tube 2 (Glucose) Tube 3 (Sucrose) Tube 4 (Starch) Tube 5 (Water) CO₂ Bubble Height (mm) How to Measure 92 3 5 6 METHODS RESET #3 W E 80 A S D 9 02 1 2 3 5 2 MY NOTES LAB DATA SHOW LABELS % 5 T M dtv 96 J: ப 27 כ 00 alt A DII FB G H J K PHASE 4: Measure gas bubble Complete the following steps: Select ruler and place next to tube 1. Measure starting height of gas bubble in respirometer 1. Record in Lab Data Repeat measurement for tubes 2-5 by selecting ruler and move next to each tube. Record each in Lab Data…

Answer 2

Textbook Question

Chapter 20, Problem 1NST

A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with Pstl-digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12.

Chapter 20, Problem 1NST, A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves

(a) Which antibiotic should be added to the medium to select cells that have incorporated a plasmid?
(b) If recombinant cells were plated on medium containing ampicillin or tetracycline and medium with both antibiotics, on which plates would you expect to see growth of bacteria containing plasmids with Drosophila DNA inserts?
(c) How can you explain the presence of colonies that are resistant to both antibiotics?

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 20, Problem 1NST

A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with Pstl-digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12.

Chapter 20, Problem 1NST, A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves

(a) Which antibiotic should be added to the medium to select cells that have incorporated a plasmid?
(b) If recombinant cells were plated on medium containing ampicillin or tetracycline and medium with both antibiotics, on which plates would you expect to see growth of bacteria containing plasmids with Drosophila DNA inserts?
(c) How can you explain the presence of colonies that are resistant to both antibiotics?

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 20, Problem 1NST

A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with Pstl-digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12.

Chapter 20, Problem 1NST, A plasmid that is both ampicillin and tetracycline resistant is cleaved with Pstl, which cleaves

(a) Which antibiotic should be added to the medium to select cells that have incorporated a plasmid?
(b) If recombinant cells were plated on medium containing ampicillin or tetracycline and medium with both antibiotics, on which plates would you expect to see growth of bacteria containing plasmids with Drosophila DNA inserts?
(c) How can you explain the presence of colonies that are resistant to both antibiotics?

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Answer 8

(a)

Expert Solution

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

Answer 9

(a)

Expert Solution

Answer 10

(a)

Expert Solution

Answer 11

Expert Solution

Answer 12

Summary Introduction

To determine: The antibiotic that an individual should add to the medium to select cells that contain the recombinant plasmid.

Introduction: Plasmid refers to an circular, extrachromosomal DNA (deoxyribonucleic acid) molecule that replicates chromosome independently.

Answer 13

Explanation of Solution

The gene that confers resistance to tetracycline is intact in the recombinant plasmid. An individual would add tetracycline to the medium to select the recombinant plasmd in the cells. In the medium, the bacteria that have been transformed with recombinant plasmid will be resistant to tetracycline.

Thus, an individual would use tetracycline to select cells that contain the recombinant plasmid.

Answer 14

(b)

Expert Solution

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

Answer 15

(b)

Expert Solution

Answer 16

(b)

Expert Solution

Answer 17

Expert Solution

Answer 18

Summary Introduction

To determine: The plates on which an individual might see the growth of bacteria having plasmids with Drosophila DNA inserts.

Introduction: Genetically modified bacterial plasmids were the first developed vectors, used for cloning purpose.

Answer 19

Explanation of Solution

Cloning is a important process in which bacterial cells containing recombinant DNA can be readily identified. This process is also accomplished is through the use of selectable marker genes. Antibiotic resistant genes provide very effective selectable marker genes. Therefore, the colonies that grow on tetracycline medium but do not grow on ampicillin medium would contain the Drosophila DNA insert.

Thus, colonies that only grow in tetracycline medium probably contain the Drosophila DNA insert.

Answer 20

(c)

Expert Solution

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Answer 21

(c)

Expert Solution

Answer 22

(c)

Expert Solution

Answer 23

Expert Solution

Answer 24

Summary Introduction

To determine: The reason that some colonies can grow on tetracycline medium as well as ampicillin medium.

Introduction: Plasmids have an origin of replication (ori) site, which makes it possible to produce several hundred copies of a plasmid in a single host cell.

Answer 25

Explanation of Solution

When performing cloning process, it is not necessary for incorporation of all DNA plasmids need to be cloned. A plasmid cut with a restriction enzyme generating sticky ends can self-ligate if cut ends of the plasmid rejoin. Also, if cleavage with PstI was incomplete, then no change in biological characteristics of the uncut plasmid would be expected.

Thus, self-ligation of plasmid and incomplete cleavage with PstI are responsible for the growth of colonies that are resistant to both antibiotics.

Answer 26

Ch. 20 - A plasmid that is both ampicillin and tetracycline...Ch. 20 - You have just created the worlds first genomic...Ch. 20 - What undesirable or unforeseen consequences might...Ch. 20 - Do we have the ethical right to alter the genomes...Ch. 20 - Should these new technologies be regulated...Ch. 20 - HOW DO WE KNOW? In this chapter we focused on how...Ch. 20 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 20 - What roles do restriction enzymes, vectors, and...Ch. 20 - The human insulin gene contains a number of...Ch. 20 - Although many cloning applications involve...

Concept explainers

Videos

Explanation of Solution

Explanation of Solution

Explanation of Solution

Want to see more full solutions like this?

Chapter 20 Solutions