The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O 1 Introduction: The l a c I gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to l a c O 1 , O 2 , and O 3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

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Answer 1

Question

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

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Answer 2

Question

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

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Answer 3

Question

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

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Answer 4

Question

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

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Answer 5

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 6

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 7

Chapter 28, Problem 3P

(a)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lac operator that deletes most of O1

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1, O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 8

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 9

(b)

Summary Introduction

To explain: The effect on gene expression in the lac operon of a mutation in lacI gene that inactivates the repressor

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to lacO1 , O2 , and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 10

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 11

(c)

Summary Introduction

To determine: The effect on gene expression in the lac operon of a mutation in the promoter that alters the region around position −10

Introduction:

The lacI gene codes for the repressor molecule which negatively regulates the Lac operon, by binding to the lacO1 , O2 and O3 operator. Binding of repressor molecule prevents the initiation of transcription, whereas binding of inducer to the repressor increase the efficiency of transcription.

Answer 12

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Answer 15

Ch. 28 - Prob. 1P Ch. 28 - Prob. 2P Ch. 28 - Prob. 3P Ch. 28 - Prob. 4P Ch. 28 - Prob. 5P Ch. 28 - Prob. 6P Ch. 28 - Prob. 7P Ch. 28 - Prob. 8P Ch. 28 - Prob. 9P Ch. 28 - Prob. 10P

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