The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent. Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10 12 ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7 × 10 9 base pairs per haploid genome.

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Answer 1

Question

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

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Answer 2

Question

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

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Answer 3

Question

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

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Answer 4

Question

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

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Answer 5

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 6

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 7

Chapter 20, Problem 20.7PS

(a)

Summary Introduction

To determine: The fraction of the total haploid genome that the 500 copies of the ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 8

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 9

(b)

Summary Introduction

To determine: The total size of the genome after amplification of the ribosomal RNA genes and the proportion of this that the amplified ribosomal RNA genes represent.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 10

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 11

(c)

Summary Introduction

To determine: How long oogenesis would have to extend if the genes had not been amplified.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 12

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 13

(d)

Summary Introduction

To determine: The reason why genes have to be amplified when the gene product needed by the cell is RNA but not usually when the desired gene product is a protein.

Introduction: The genes encoding ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene amplification. The unamplified number of ribosomal RNA genes is about 500 per haploid genome. After amplification, the oocyte contains about 500,000 ribosomal RNA genes per haploid genome. This level of amplification is necessary to allow the egg cells to synthesize 10¹² ribosomes that accumulate during the two months of oogenesis in this species. Each ribosomal RNA gene consists of about 13,000 base pairs, and the genome size of Xenopus is about 2.7×109 base pairs per haploid genome.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 20 - Suppose you are analyzing a haploid E. coli strain...Ch. 20 - How do epigenetic changes, such as DNA...Ch. 20 - Compare the basic state of a gene in bacteria...Ch. 20 - Prob. 1Q Ch. 20 - Prob. 20.4CC Ch. 20 - Prob. 20.1PS Ch. 20 - The Pickled Prokaryote. Pickelensia hypothetica is...Ch. 20 - Prob. 20.3PS Ch. 20 - Attenuation in 25 or Fewer Words. Complete each of...Ch. 20 - Prob. 20.5PS

Solution Summary: The author explains that amplification of ribosomal RNA during oogenesis in Xenopus laevis is the best studied example of gene synthesis.

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