Essential Cell Biology (Fourth Edition)
Essential Cell Biology (Fourth Edition)
4th Edition
ISBN: 9780815345251
Author: Bruce Alberts, Dennis Bray, Karen Hopkin, Alexander D. Johnson, Julian Lewis, Martin Raff, Keith Roberts, Peter Walter
Publisher: W. W. Norton & Company
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Chapter 18, Problem 20Q
Summary Introduction

To draw: To color sister chromatids and follow their distribution through mitosis and cytokinesis.

Introduction: Cell division is a process where the cells during high nutrition conditions give rise to two daughter cells. The cell division is two types: Mitosis and Meiosis. The mitosis is where the cell divides to form exactly two replicas of itself. The meiosis is reduction division where the cell replicates but the chromosome number reduced by half. In both the cases, there is an involvement of the spindle fiber machinery to pull apart the sister chromatids to the two daughter cells equally from the metaphase plate. During cell division, DNA occurs in condensed form and appears as distinct chromosomes. Each chromosome has two sets of DNA which forms the sister chromatids which are held together at the centromere.

Summary Introduction

To explain: The event which commits the chromatid to a particular daughter cell.

Introduction: Cell division is a process where the cells during high nutrition conditions give rise to two daughter cells. The cell division is two types: Mitosis and Meiosis. The mitosis is where the cell divides to form exactly two replicas of itself. The meiosis is reduction division where the cell replicates but the chromosome number reduced by half. In both the cases, there is an involvement of the spindle fiber machinery to pull apart the sister chromatids to the two daughter cells equally from the metaphase plate.

Summary Introduction

To explain: The possibility of reversal of a chromatid which got committed to a daughter cell.

Introduction: Cell division is a process where the cells during high nutrition conditions give rise to two daughter cells. The cell division is two types: Mitosis and Meiosis. The mitosis is where the cell divides to form exactly two replicas of itself. The meiosis is reduction division where the cell replicates but the chromosome number reduced by half. In both the cases, there is an involvement of the spindle fiber machinery to pull apart the sister chromatids to the two daughter cells equally from the metaphase plate.

Summary Introduction

To explain: The factors which influences the commitment of a chromatid to a daughter cell.

Introduction: The mitosis is where the cell divides to form exactly two replicas of itself. The meiosis is reduction division where the cell replicates but the chromosome number reduced by half. In both the cases, there is an involvement of the spindle fiber machinery to pull apart the sister chromatids to the two daughter cells equally from the metaphase plate. During cell division, DNA occurs in condensed form and appears as distinct chromosomes. Each chromosome has two sets of DNA which forms the sister chromatids which are held together at the centromere.

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