The reason why Escherichia coli ( E.coli ) strains with a deleted dam gene has a higher rate of spontaneous mutation. Introduction: The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

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Answer 1

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Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

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Answer 2

Question

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

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Answer 3

Question

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

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Answer 4

Question

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

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Answer 5

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

Answer 6

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

Answer 7

Chapter 19, Problem 39CONQ

Summary Introduction

To review:

The reason why Escherichia coli(E.coli) strains with a deleted dam gene has a higher rate of spontaneous mutation.

Introduction:

The mismatch repair system is involved in repairing incorrectly paired bases which might have been overlooked by the proofreading activity of DNA (deoxyribonucleic acid) polymerase. This system works on hemimethylated DNA. It involves a set of proteins called the Mut (mutation) proteins and the rate of mutation increases in their absence.

Answer 8

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Answer 11

Ch. 19.1 - 1. A mutation changes a codon that specifies...Ch. 19.1 - A down promoter mutation causes the promoter of a...Ch. 19.1 - 3. A mutation in one gene that reverses the...Ch. 19.1 - Which of the following is an example of a somatic...Ch. 19.2 - Prob. 1COMQ Ch. 19.3 - Which of the following is not an example of a...Ch. 19.3 - A point mutation could be caused by a....Ch. 19.3 - One way that TNRE may occur involves the formation...Ch. 19.4 - Nitrous acid replaces amino groups with keto...Ch. 19.4 - Prob. 2COMQ

Solution Summary: The author explains that an E.coli mutant with no dam gene has a higher rate of spontaneous mutation due to the inability of MutH to recognize the newly synthesized DNA.

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