



- 



Contents 



PREFACE v 



CHAPTER 



1 THE ORIGIN OF ORGANIC MOLECULES 



Harold C. JJrey 1 



2 EVOLUTION OF PHOTOSYNTHETIC MECHANISMS 

 Melvin Calvin 15 



3 BIOCHEMISTRY AND EVOLUTION Ernest Baldwin 45 



4 THE NATURE AND DIVERSITY OF CATALYTIC PRO- 

 TEINS Paul D. Boyer 69 



5 THE ORIGIN OF SPECIFIC PROTEINS 



Clement L. Markert 95 



6 DIVERSITY AT THE SUBCELLULAR LEVEL AND ITS 

 SIGNIFICANCE Keith R. Porter 121 



7 DOES PREFORMED CELL STRUCTURE PLAY AN 

 ESSENTIAL ROLE IN CELL HEREDITY? 



Tracy M. Sonneborn 165 



8 MICROENVIRONMENTAL INFLUENCES IN CYTO- 

 DIFFERENTIATION Clifford Grobstein 223 



9 DIFFERENTIATION AND MORPHOGENESIS IN IN- 

 SECTS Carroll M. Williams 243 



10 GROWTH AND DIFFERENTIATION IN THE NERV- 

 OUS SYSTEM Rita Levi-Montahini 261 



INDEX 



8 (pi -9 r* v 



297 



VII 



