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Chapter 5

DNA and Chromosomes

Essential

Cell Biology

FOURTH EDITION

Copyright © Garland Science 2014

Alberts • Bray • Hopkin • Johnson • Lewis • Raff • Roberts • Walter

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CHAPTER CONTENTS

THE STRUCTURE OF DNA

THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

THE REGULATION OF CHROMOSOME STRUCTURE

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THE STRUCTURE OF DNA

  • A DNA Molecule Consists of Two Complementary Chains of Nucleotides
  • The Structure of DNA Provides a Mechanism for Heredity

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THE STRUCTURE OF DNA

  • A DNA Molecule Consists of Two Complementary Chains of Nucleotides
  • The Structure of DNA Provides a Mechanism for Heredity

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THE STRUCTURE OF DNA

  • A DNA Molecule Consists of Two Complementary Chains of Nucleotides
  • The Structure of DNA Provides a Mechanism for Heredity

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE STRUCTURE OF EUKARYOTIC CHROMOSOMES

  • Eukaryotic DNA Is Packaged into Multiple Chromosomes
  • Chromosomes Contain Long Strings of Genes
  • Specialized DNA Sequences Are Required for DNA Replication and Chromosome Segregation
  • Interphase Chromosomes Are Not Randomly Distributed Within the Nucleus
  • The DNA in Chromosomes Is Always Highly Condensed
  • Nucleosomes Are the Basic Units of Eukaryotic Chromosome Structure
  • Chromosome Packing Occurs on Multiple Levels

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THE REGULATION OF CHROMOSOME STRUCTURE

  • Changes in Nucleosome Structure Allow Access to DNA
  • Interphase Chromosomes Contain Both Condensed and More Extended Forms of Chromatin

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THE REGULATION OF CHROMOSOME STRUCTURE

  • Changes in Nucleosome Structure Allow Access to DNA
  • Interphase Chromosomes Contain Both Condensed and More Extended Forms of Chromatin

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END-OF-CHAPTER QUESTIONS

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