1. Nonsense mutations of the supX locus: Further characterization of the supX mutant phenotype

   • Eugenie Dubnau
   • A. B. Lenny
   • P. Margolin

   OriginalPaper Pages: 191 - 200

2. Nuclear and extranuclear inheritance of oligomycin resistance in Aspergillus nidulans

   • Robert T. Rowlands
   • Geoffrey Turner

   OriginalPaper Pages: 201 - 216

3. Acetate-nonutilizing mutants of Neurospora crassa: acu-6, the structural gene for PEP carboxykinase and inter-allelic complementation at the acu-6 locus

   • Ross E. Beever
   • J. R. S. Fincham

   OriginalPaper Pages: 217 - 226

4. Complementation among developmental mutants in Aspergillus nidulans

   • Giusi Barbata
   • Laura Valdes
   • Giuseppe Sermonti

   OriginalPaper Pages: 227 - 232

5. Dosage compensation of sex-linked genes in Drosophila melanogaster

   • L. Z. Faizullin
   • V. A. Gvozdev

   OriginalPaper Pages: 233 - 245

6. Content of RNA polymerase in haploid and merodiploid strains of Escherichia coli

   • I. A. Bass
   • Zh. M. Gorlenko
   • M. I. Ovadis

   OriginalPaper Pages: 247 - 254

7. Base pair substitutions caused by the uvr502 mutation affecting mutation rates and UV-sensitivity of Escherichia coli

   • G. B. Smirnov
   • E. V. Filkova
   • A. G. Skavronskaya

   OriginalPaper Pages: 255 - 266

8. The two transfer regions of the Rhizobium lupini conjugation

   • W. Heumann
   • A. Pühler
   • Erika Wagner

   OriginalPaper Pages: 267 - 274