The reason that there are no proC - genotypes among the transductants. Introduction: In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

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Answer 1

Question

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Answer 2

Question

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

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Answer 3

Question

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

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Answer 4

Question

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

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Answer 5

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 6

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 7

Chapter 9.4, Problem 31AQP

a.

Summary Introduction

To determine:

The reason that there are no proC^- genotypes among the transductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 8

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 9

b.

Summary Introduction

To determine:

The genotypes represent single transductants and which of them represent cotransductants.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 10

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 11

c.

Summary Introduction

To determine:

Whether there is any evidence that proA, proB and proD are located close to proC, with explanation.

Introduction:

In transduction process, the closer the genes are present on a DNA, the more possibility they have to show transduction together and have higher transduction rates. In the experiment, the mutants of Streptococcus pneumonia show transduction and give different variants.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 9.1 - Prob. 1COQ Ch. 9.1 - Prob. 17AQP Ch. 9.1 - Prob. 1TPSQ Ch. 9.2 - Prob. 1CC Ch. 9.2 - Prob. 2COQ Ch. 9.2 - Prob. 3COQ Ch. 9.2 - Prob. 2TPSQ Ch. 9.3 - Prob. 2CC Ch. 9.3 - Prob. 3CC Ch. 9.3 - Prob. 4CC

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Chapter 9 Solutions