Contents of Part I 



CONTRIBUTORS TO PART I 

 PREFACE 



Chapter I 

 The Replication of DNA in Cell-Free Systems 



Maurice J. Bessmax 



I. Introduction 1 



II. Synthesis of Deoxyribonucleotides 3 



III. Phosphorylation of Deoxyribonucleotides 12 



IV. Synthesis of DNA by Escherichia coli Polymerase 17 



V. Synthesis of DNA by Calf Thymus Po^-merase 50 



VI. Synthesis of DNA in Bacteriophage-Infected Escherichia coli ... 54 



VII. Conclusions 60 



Acknowledgments 60 



References 60 



Chapter II 

 The Replication and Organization of DNA in Chromosomes 



J. Herbert Taylor 



I. Introduction 65 



II. A Morphological Picture of tlie Chromosome 67 



III. Replication of DNA 72 



IV. Exchanges between DNA Subunits and Genetic Recombination . . 82 

 V. Sequences of Replication of DNA in Chromosomes 88 



VI. Chromosome Reproduction in Relation to DNA Replication and 



Protein Synthesis 89 



VII. Molecular Models for Organization of DNA into Chromosomes . . 96 



References 108 



ix 



