《Cold Spring Harbor Symposia on Quantitative Biology Volume XVI Genes and Mutations》

Theory of the Gene1

Goldschmidt,Richard B．Chromosomes and genes1

McClintock,Barbara．Chromosome organization and genic expression13

Stadler,L．J．Spontaneous mutation in maize49

Horowitz,N．H．,and Leupold,Urs．Some recent studies bearing on the one gene-one enzyme hypothesis65

Cytoplasmic Constituents of Heredity75

Ephrussi,Boris,and Hottinguer,Helene．On an unstable cell state in yeast75

Spiegelman,S．The particulate transmission of enzyme-forming capacity in yeast87

L＇ Heritier,Ph．The Co2 Sensitivity problem in Drosophila99

Provasoli,Luigi,Hutner,S．H．,and Pintner,Irma J．Destruction of chloroplasts by streptomycin113

Michaelis,P．Interactions between genes and cytoplasm in Epilobium121

Evolution of the Gene131

Stephens,S．G．＂Homologous＂genetic loci in Gossypium131

Bonner,David M．Gene-enzyme relationships in Neurospora143

Lewis,E．B．Pseudoallelism and gene evolution159

Schultz,Jack,and Redfield,Helen．Interchromosomal effects on crossing over in Drosophila175

Induction of Changes in Genes and Chromosomes Ⅰ199

Auerbach,Charlotte．Problems in chemical mutagensis199

Demerec,M．,and Hanson,Jessie．Mutagenic action of manganous chloride215

Roberts,Richard B．,and Aldous,Elaine．Manganese metabolism of Escherichia coli as related to its mutagenic action229

Levan,Albert．Chemically induced chromosome reactions in Allium cepa and Vicia faba233

Jensen,K．A．,Kirk,I．,Kolmark,G．,and Westergaard,M．Chemically induced mutations in Neurospora245

Induction of Changes in Genes and Chromosomes Ⅱ263

Gustafsson,Ake．Mutations,environment and evolution263

Giles,Norman H．,Jr．Studies on the mechanism of reversion in biochemical mutants of Neurospora crassa283

Hollaender,Alexander,Baker,W．K．,and Anderson,E．H．Effect of oxygen tension and certain chemicals on the X-ray sensitivity of mutation production and survival315

Russell,W．L．X-ray induced mutations in mice327

Genetic Mechanisms in Bacteria and Bacterial Viruses Ⅰ337

Novick,Aaron,and Szilard,Leo．Experiments on spontaneous and chemically induced mutations of bacteria growing in the chemostat337

Atwood,K．C．,Schneider,Lillian K．,and Ryan,Francis J．Selective mechanisms in basteda345

Witkin,Evelyn,M．Nuclear segregation and the delayed appearance of induced mutants in Escherichia coli357

Genetic Mechanisms in Bacteria and Bacterial Viruses Ⅱ373

Bisset,K．A．Genetical implications of bacterial cytology376

DeLamater,Edward D．A new cytological basis for bacterial genetics381

Lederberg,J．,Lederberg,E．M．,Zinder,N．D．,and Lively,E．R．Recombination analysis of bacterial heredity413

Genetic mechanisms in Bacteria and Bacterial Viruses Ⅲ445

Ephrussi-Taylor,Harriett．Genetic aspects of transformations of pneumococci445

Hotchkiss,Rollin D．Transfer of penicillin resistance in pneumococci by the desoxyribonucleate derived from resistant cultures457

Luria,S．E．The frequency distribution of spontaneous bacteriophage mutants as evidence for the exponential rate of phage reproduction463

Hershey,A．D．,and Chase,Martha．Genetic recombination and heterozygosis in bacteriophage471

Concluding Session481

Mirsky,A．E．Some enzymes of isolated nuclei481

Sonneborn,T．M．Some current problems of genetics in the light of investigations on Chlamydomonas and Paramecium483

Appendix505

Flory,L．E．The television microscope505