To outline: The role of titin. Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

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Answer 1

Question

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

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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…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

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Answer 3

Question

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

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Answer 4

Question

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

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Answer 5

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

Answer 6

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.

Answer 7

Chapter 33, Problem 1.1Q

Summary Introduction

To outline: The role of titin.

Introduction: Muscle is made up of muscle fibers, and each fiber has different bands. A band which consists of actin protein, M band, which consists of myosin filaments, a Z line consists of the protein to which actin filaments are attached.

Answer 8

Expert Solution & Answer

Explanation of Solution

A sarcomere is a structure in a muscle fiber that consists of half dark and half of light bands. Inside the sarcomere, actin filaments are attached to the proteins of Z-line, but myosin filaments are held at their place because of a protein called titin. Titin is a giant and largest known protein. Titin protein covers myosin molecules and Z-line. Therefore, the titin protein has two functions. It holds the myosin protein, and it is elastic near the Z line; therefore it also helps in the process of stretching.