Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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How is homologous recombination for DNA repair different from recombination in meiosis? Choose all correct answers. a. HR in DNA repair requires a double-strand break, but meiotic recombination does not. b. HR in DNA repair requires strand invasion, but meiotic recombination does not. c. HR in DNA repair results in identical chromosomes. Meiotic recombination results in changes to the DNA sequence of the "repaired" chromosomes. d. HR in DNA repair uses a newly synthesized identical chromosome as a template. Meiotic recombination uses a homologous chromosome as a template.

A parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place: A. the parent cell must divide its DNA in half so each daughter cell gets only the genes needed to carry out its functions. In this way, differentiation occurs. B. the parent cell must reproduce its DNA during telophase C. the parent cell must first be fertilized D. the parent cell must replicate its entire genome prior to mitosis E. crossover must be delayed until the second cell division

All of the following is significant application of mitosis except. a. Cloning b. Budding c. Formation of Gametes d. Stem Cell Regeneration If 6 cells undergoing celll division has 12 chromosomes, how many chromosome will there be in the daughter cells after mitosis and meiosis II respectively? a. 6 and 12 b. 12 and 6 c. 6 and 3 d. 6 and 6 In meiosis, the number of chromosomes of the mother cell compared to the resultant daughter cell's chromosome is A. doubled B. halved C. tripled D. the same Elongation of the cell undergoing the last phases of mitosis is due to A. movement of the chromosomes to the opposite poles B. increase in the volume of the cytoplasm that should be contained C. depolymerization of the spindle fibers connected to the kinetochore D. polymerization of the spindle fibers not connected to the kinetochore

Answer 2

Question

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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Answer 3

Question

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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Answer 4

Question

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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Answer 5

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Answer 6

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Answer 7

Chapter 11, Problem 6A

Summary Introduction

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 11.1 - Prob. 1LO Ch. 11.1 - Prob. 2LO Ch. 11.2 - Describe how homologous chromosomes pair during...Ch. 11.2 - Prob. 2LO Ch. 11.3 - Prob. 1LO Ch. 11.3 - Prob. 2LO Ch. 11.3 - Prob. 3LO Ch. 11.4 - Prob. 1LO Ch. 11.4 - Prob. 2LO Ch. 11.4 - Explain the importance of the suppression of...

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Solution Summary: The author explains that mutations affect DNA repair and meiosis because the proteins involved in the repair of double-strand breaks also take part in crossing over.

Concept explainers

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Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

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Chapter 11 Solutions

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Solution Summary: The author explains that mutations affect DNA repair and meiosis because the proteins involved in the repair of double-strand breaks also take part in crossing over.

Concept explainers

Videos

Introduction: Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.

Want to see the full answer?

Chapter 11 Solutions

Introduction:

Crossing over occur at the time of chiasmata formation. Chiasmata is a point that is present in the homologous chromosomes that get exchanged between two strands. Although DNA repair is a mechanism that involve a protein causes the addition of nucleotides in DNA.