204 



INDEX 



Deoxyribose nucleic acid(s) (con- 

 tinuation) 



— , induction of transformation of 

 bacterial types, 26 



— , inhibition of degradation by 

 deoxyribonuclease with citrate 

 ions, 6 



— , involvement in the genetic ap- 

 paratus of the cell, 71 



— , isolation of nucleoproteins as 

 first step in isolation of — , 50 



— , location in cells, 25, 26 



— , maintenance of sequence integ- 

 rity, 129 



— , molar ratios in — of different 

 origin (table), 30 



— , — of adenine to thymine and 

 of guanine to cytosine (+ methyl- 

 cytosine), 13, 51, 52 



— , molecular structure, discussion 

 of Watson-Crick model, 53-56 



— , molecular weight, 5, 88, 128, 

 165 



— , position of the phosphate bridg- 

 es in calf thymus — , 65 



— , presence outside the cell nucleus, 

 25 



— , purines and pyrimidines, 65, 66 



— , regularities in composition, see 

 base-pairing regularities 



— , schematic representation of seg- 

 ment, 90, 132 



— , selection of fraudulent and of 

 natural analogues in formation, 

 150-153 



— , sequence analysis, see sequence 

 analysis of DNA 



— , species differences, 13, 14, 86- 

 88 



— , species specificity and organ 

 specificity, 13, 66 



— , specimens, uniformity of ab- 

 sorption spectrum in the ultra- 

 violet, 32 



— , structure and sequence of nu- 

 cleotides, feasibility of sequence 

 analysis, 90 



Deoxyribose nucleic acid(s) (con- 

 tinuation) 



— of thymus, spleen, liver, tuber- 

 cle bacilli, human sperm; isola- 

 tion, 7 



Deoxyribothymidine, separation 

 from thymidine, 9 



Depolymerizing enzymes of nucleic 

 acids, 18-20 



Differential distribution analysis of 

 DNA, characteristics of nucleo- 

 tide sequence, 122-124, 134-148 



, mechanism, 134-137 



Differential pyrimidine distribution 

 analysis, principal conclusions, 

 166, 167 



Dinucleoside triphosphates compris- 

 ing 5-methylcytidine and either 

 cytidine or thymidine, 140 



Dissymmetry ratio of nucleic acids, 

 definition, 66, 86 



Diversity and identity in high- 

 molecular cell constituents, 2-5 



— of nucleic acids, chemical diver- 

 sity in DNA of various species 

 and in total cell DNA, 50, 57, 66, 

 88, 105-106 



, — in RNA of various spe- 

 cies and in RNA's of the same 

 cell, 105-106 



isolated from a given cell, 



66 



Division of labor in the life of the 

 cell, 185 



DNA, see also deoxyribose nucleic 

 acid(s) (deoxyribonucleic acid), 

 deoxypentose nucleic acid(s) 



— , is there evidence for the exist- 

 ence of DNA chains for biologi- 

 cal information in higher forms 

 of life?, 163 



DNA and RNA, critical remarks 

 about present conceptions of func- 

 tions of — , 185-195 



— , remark about the terms, 84 



Dynamic state of the body constitu- 

 ents, 183 



