When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 6, Problem 1NST

When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?

Chapter 6, Problem 1NST, When the interrupted mating technique was used with five different strains of Hfr bacteria, the

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

When the interrupted mating technique was used withfive different strains of Hfr bacteria, the following orders ofgene entry and recombination were observed. On the basisof these data, draw a map of the bacterial chromosome.Do the data support the concept of circularity?HfrStrain Order1 T C H R O2 H R O M B3 M O R H C4 M B A K T5 C T K A B

With respect to F+ and F- bacterial matings, answer the following questions: (a) How was it established that physical contact between cells was necessary? (b) How was it established that chromosome transfer was unidirectional? (c) What is the genetic basis for a bacterium’s being F+?

Three different Hfr donor strains are mixed with separate samples of an F− strain, and the following mapping data are provided from studies of interrupted conjugation: Appearance of genes in F − cells Hfr1: Genes b+ d+ c+ f+ g+ Time* 3 5 16 27 59 Hfr2: Genes e+ f+ c+ d+ b+ Time 6 24 35 46 48 Hfr3: Genes d+ c+ f+ e+ g+ Time 4 15 26 44 58 Construct a genetic map for these genes, indicating their order on the bacterial chromosome and the distances between them.

Answer 2

Textbook Question

Chapter 6, Problem 1NST

When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?

Chapter 6, Problem 1NST, When the interrupted mating technique was used with five different strains of Hfr bacteria, the

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 6, Problem 1NST

When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?

Chapter 6, Problem 1NST, When the interrupted mating technique was used with five different strains of Hfr bacteria, the

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 6, Problem 1NST

When the interrupted mating technique was used with five different strains of Hfr bacteria, the following orders of gene entry and recombination were observed. On the basis of these data, draw a map of the bacterial chromosome. Do the data support the concept of circularity?

Chapter 6, Problem 1NST, When the interrupted mating technique was used with five different strains of Hfr bacteria, the

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Answer 8

Expert Solution

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Answer 9

Expert Solution

Answer 10

Expert Solution

Answer 11

Expert Solution

Answer 12

Summary Introduction

To draw: A map for bacterial chromosome.

Introduction: The bacterial chromosome is transferred during the process of conjugation, which leads to genetic recombination. The genetic recombination provides data for mapping.

Answer 13

Answer to Problem 1NST

Pictorial representation: The sequence of genes are arranged as contigs, and their overlapping is shown in fig 1.

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 1

Fig 1: Overlapping of the contigs of the Hfr strains.

Pictorial representation: The chromosomal map of bacteria

Concepts of Genetics (12th Edition), Chapter 6, Problem 1NST , additional homework tip 2

Answer 14

Explanation of Solution

The transfer of chromosome is strain specific. It also depends on where and in which orientation in the chromosomes the F factor has integrated.

In interrupted mating, there is difference in the time of gene transfer. Some may be transferred earlier while other are transferred late. In strain 2 and 4, the common sequence is MB. In strain 1 and 3, CHRO is common, and HRO is the repetitive sequence.

Answer 15

Expert Solution

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.

Answer 16

Expert Solution

Answer 17

Expert Solution

Answer 18

Expert Solution

Answer 19

Summary Introduction

To determine: Whether the given data support the concept of circularity.

Introduction: A single bacterial chromosome contains most of the DNA of the bacteria. Mapping the bacterial chromosomes provides information regarding the position of various genes.

Answer 20

Explanation of Solution

Contigs are the continuous set of overlapping DNA segments. These segments represent a particular region of the DNA. In the given figure, the end overlaps each other. In two strains the order is reversed which means the orientation of the transfer is reversed. By the overlapping of the contigs in the given strains, the map that will be constructed is TCHROMBAK. All the genes are linked together to give a map. The ends overlap indicates that the map is circular. When all these chromosomes are arranged in the form of a map, they form a circular map.

Thus, the map constructed that will be constructed from the given Hfr strains is TCHROMBAK. The overlap ends indicate that the map is circular.