1. Interactions among genes controlling sensitivity to radiation and alkylation in yeast

   • Martin Brendel
   • Robert H. Haynes

   OriginalPaper Pages: 197 - 216

2. Two major groups of colicin factors: Their evolutionary significance

   • K. G. Hardy
   • G. G. Meynell
   • B. G. Spratt

   OriginalPaper Pages: 217 - 230

3. On the mode of antirepressor action in anti-immune cells

   • Paul Galland
   • Paola Bassi
   • Enrico Calef

   OriginalPaper Pages: 231 - 239

4. Biochemical genetics of bacterial sporulation

   • Pierre Milhaud
   • Georges Balassa

   OriginalPaper Pages: 241 - 250

5. Phage A25-mediated transfer induction of a prophage in Streptococcus pyogenes

   • Horst Malke

   OriginalPaper Pages: 251 - 264

6. Three unlinked suppressor loci of nuclear respiratory deficient pet ₂₇ mutant of yeast

   • Zbigniew Kotylak

   OriginalPaper Pages: 265 - 273

7. Mutants of Saccharomyces able to grow after inhibition of thymidine phosphate synthesis

   • Wolfgang Laskowski
   • Elke Lehmann-Brauns

   Short Communication Pages: 275 - 277