1. The effect of lex on UV sensitivity, filament formation and λ induction in lon mutants of Escherichia coli

   • John J. Donch
   • Joseph Greenberg

   OriginalPaper Pages: 277 - 281

2. Destruction of low efficiency markers is a slow process occurring at a heteroduplex stage of transformation

   • Nadja B. Shoemaker
   • Walter R. Guild

   OriginalPaper Pages: 283 - 290

3. Intracellular competition for a mismatch recognition system and marker-specific rescue of transforming DNA from inactivation by ultraviolet irradiation

   • Walter R. Guild
   • Nadja B. Shoemaker

   OriginalPaper Pages: 291 - 300

4. Etudes de mutations affectant les gènes de structure de l'isomerase uronique et de l'oxydoreductase altronique chez Escherichia coli K12

   • Raymond C. Portalier
   • Janine M. Robert-Baudouy
   • Georges M. Némoz

   OriginalPaper Pages: 301 - 319

5. The effect of mating type on the polarity of mitochondrial gene transmission in Saccharomyces cerevisiae

   • David Callen

   OriginalPaper Pages: 321 - 329

6. The linkage relationship of the cytoplasmic drug-resistance factors in Saccharomyces cerevisiae

   • Kohta Suda
   • Akira Uchida

   OriginalPaper Pages: 331 - 339

7. Ribosomal RNA synthesis in the F′14 episome-containing minicells of Escherichia coli

   • Hiroshi Hori
   • Renkichi Takata
   • Syozo Osawa

   OriginalPaper Pages: 341 - 347

8. Pleiotropic mutations in Escherichia coli conferring tolerance to glycine and sensitivity to penicillin

   • H. J. W. Wijsman
   • H. C. Pafort

   OriginalPaper Pages: 349 - 357

9. Fine structure of the lysozyme gene of bacteriophage T4B

   • V. K. Ravin
   • M. I. Artemiev

   OriginalPaper Pages: 359 - 365