1. Genetic effects of N-methyl-N′-nitro-N-nitrosoguanidine in Neurospora crassa

   • H. V. Malling
   • F. J. De Serres

   OriginalPaper Pages: 195 - 207

2. Adjacent effect on suppression efficiency

   • Hiroko Yahata
   • Yoshiko Ocada
   • Akira Tsugita

   OriginalPaper Pages: 208 - 212

3. Das Falcifolia-Syndrom der Oenotheren

   • Wilfried Stubbe

   OriginalPaper Pages: 213 - 227

4. The effects of caffeine, ultraviolet and X-irradiation on DNA breakdown in E. coli B and some of its dark repair mutants

   • G. W. Grigg

   OriginalPaper Pages: 228 - 238

5. Nonsense mutants of Serratia phage Kappa

   • U. Winkler
   • U. Kopp-Scholz
   • Ch. Haux

   OriginalPaper Pages: 239 - 253

6. Incorporation of 5-bromodeoxyuridine into DNA of wild type Escherichia coli and its use for the enrichment of auxotrophic mutants

   • Arie Rosner
   • Ezra Yagil

   OriginalPaper Pages: 254 - 262

7. Mechanism of conjugation and recombination in bacteria

   • Mirosława Włodarczyk
   • Władysław Kunicki-Goldfinger

   OriginalPaper Pages: 263 - 273

8. Replication of bacteriophages in Escherichia coli mutants thermosensitive in DNA synthesis

   • Erich Lanka
   • Heinz Schuster

   OriginalPaper Pages: 274 - 285

9. The effect of storage on the frequency of dominant lethals in Drosophila melanogaster

   • R. J. Šrám

   Short Communication Pages: 286 - 288