a. To determine: The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum. Introduction: Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

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Answer 1

Question

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.) Data Table 1Stage Totals PercentInterphase Mitosis: Prophase Metaphase Anaphase Telophase Cytokinesis Totals 100 100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Answer 2

Question

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

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Answer 3

Question

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

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Answer 4

Question

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

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Answer 5

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

Answer 6

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Answer 7

Chapter 13, Problem 11P

Summary Introduction

a.

To determine:

The significance of ensuring that reversion does not take place in the experiment of Lederberg and Tatum.

Introduction:

Reversion, also known as the reverse mutation, is the mutation process in which the wild type genome is restored. The organisms that show reversion are known as reverants. The bacteria exhibits reversion, but it is a very rare event.

Answer 8

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

Answer 9

Summary Introduction

b.

To determine:

The modification in the experiment to indicate the donor and recipient bacteria during conjugation.

Introduction:

There are three modes of transfer of genetic material that takes place in the bacteria. The processes by which the horizontal gene transfer takes place are categorized as transformation, transduction, and conjugation. The change in the genetic composition can also be brought about by mutation.

Answer 10

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Answer 11

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Answer 12

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Answer 13

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Solution Summary: The author explains that Lederberg and Tatum's experiment did not show which bacteria was a donor and which was recipient in the process of conjugation.

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