1. On the mechanism of conjugation in Escherichia coli K 12

   • S. E. Bresler
   • V. A. Lanzov
   • A. A. Lukjaniec-Blinkova

   OriginalPaper Pages: 269 - 284

2. On the nature of dominance in the ad₂ locus of Saccharomyces cerevisiae

   • N. Nashed

   OriginalPaper Pages: 285 - 289

3. Mutagen specificity in the induction of karyotic versus cytoplasmic respiratory deficient mutants in yeast by nitrous acid and alkylating nitrosamides

   • R. Schwaier
   • N. Nashed
   • F. K. Zimmermann

   OriginalPaper Pages: 290 - 300

4. Genes involved in meiosis and sporulation of a yeast

   • C. Bresch
   • Gretel Müller
   • R. Egel

   OriginalPaper Pages: 301 - 306

5. Das Ommochrom I als wahrscheinliche Vorstufe des Ommins in der Ommochromsynthese von Plodia interpunctella und Ephestia kühniella

   • Francisco Ferrand de Almeida

   OriginalPaper Pages: 307 - 315

6. Caffeine-death in Escherichia coli

   • G. W. Grigg

   OriginalPaper Pages: 316 - 335

7. Die molekulare Struktur transduzierender Partikel beim Salmonella-Phagen P22

   • Horst Schmieger

   OriginalPaper Pages: 336 - 347

8. A lack of noncomplementation among chemically induced ad ₂ mutants of Saccharomyces cerevisiae

   • N. Nashed

   OriginalPaper Pages: 348 - 352

9. O^o and strong-polar mutations in the gal operon and insertions

   • Elke Jordan
   • Heinz Saedler
   • Peter Starlinger

   OriginalPaper Pages: 353 - 363

10. A characteristic difference of radiosensitivity between phage containing single- and double-stranded nucleic acid

    • Gerhart Hotz

    Short Communication Pages: 364 - 366

11. Suppression and the sequential appearance of the galactose enzymes in a transferase Amber mutant of E. coli

    • Georg Michaelis
    • Peter Starlinger

    Short Communication Pages: 367 - 369