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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Which of the following situations does not describes a chromosomal mutation? Select one: a. A cytosine nucleotide is substituted for thymine nucleotide in a gene. b. A portion of Chromosome 4 is deleted during interphase of meiosis. c. The sister chromatids of Chromosome 18 do not separate during anaphase II. d. A section of Chromosome 17 is duplicated leading to problems in the peripheral nervous system.

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

Match each term with its description Chromatid Chromosome + Chromatin Homologous chromosomes Sister chromatids A. "Chromosome pairs inherited from each parent. Chromosomes pairs with same shape, same size and same genes. " B. One of the two identical copies making a chromosome C. Chromatids product of DNA duplication D. Single piece of chromatin tightly packed DNA with proteins E. Loosely-packed DNA with proteins

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 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.

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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.