1. Control of gene expression in bacteriophage T7: Transcriptional controls

   • H. Ponta
   • H. J. Rahmsdorf
   • M. Schweiger

   OriginalPaper Pages: 281 - 287

2. Hemoproteid formation in yeast

   • Jan Pachecka
   • Jadwiga Litwińska
   • Tomasz Biliński

   OriginalPaper Pages: 299 - 305

3. Mutual regulation of magnified bobbed loci in Drosophila melanogaster

   • F. Graziani
   • E. Boncinelli
   • S. Gargano

   OriginalPaper Pages: 307 - 311

4. Alanyl-tRNA synthetase of Escherichia coli: Genetic analysis of the structural gene and of suppressor mutations

   • Dieter Ruffler
   • Peter Buckel
   • August Böck

   OriginalPaper Pages: 313 - 323

5. Genetic analysis of an alteration of ribosomal protein S20 in revertants of an alanyl-tRNA-synthetase mutant of Escherichia coli

   • A. Böck
   • D. Ruffler
   • H. G. Wittmann

   OriginalPaper Pages: 325 - 332

6. Isolation, genetics and survival characteristics of thermo-sensitive mutants of yeast

   • W. E. Evans
   • James M. Parry

   OriginalPaper Pages: 333 - 344

7. Biochemical and genetic characterization of dehydrobiotin resistant mutants of Escherichia coli

   • C. H. Pai

   OriginalPaper Pages: 345 - 357

8. Stimulation of RNA chain initiation by the N gene protein of bacteriophage λ

   • Karen C. Wood
   • Michael W. Konrad

   OriginalPaper Pages: 359 - 366