1. Close vicinity of IS1 integration sites in the leader sequence of the gal operon of E. coli

   • S. Kühn
   • H.-J. Fritz
   • P. Starlinger

   OriginalPaper Pages: 235 - 241

2. Suppression of mitochondrially-determined resistance to chloramphenicol and paromomycin by nuclear genes in Saccharomyces cerevisiae

   • Michael F. Waxman
   • Jeffrey A. Knight
   • Philip S. Perlman

   OriginalPaper Pages: 243 - 250

3. Characterization of plasmid transformation in Bacillus subtilis: Kinetic properties and the effect of DNA conformation

   • Sara Contente
   • David Dubnau

   OriginalPaper Pages: 251 - 258

4. In vivo nicking and rejoining of nuclear DNA in ultraviolet-irradiated radiation-resistant and sensitive strains of Dictyostelium discoideum

   • D. L. Welker
   • R. A. Deering

   OriginalPaper Pages: 259 - 263

5. Interactions between radiation-sensitive mutations in double-mutant haploids of Dictyostelium discoideum

   • D. L. Welker
   • R. A. Deering

   OriginalPaper Pages: 265 - 270

6. rDNA magnification in D. melanogaster: State of rDNA copies following the first step

   • F. Graziani
   • G. La Mantia

   OriginalPaper Pages: 271 - 277

7. Repair of MMS-induced DNA double-strand breaks in haploid cells of Saccharomyces cerevisiae, which requires the presence of a duplicate genome

   • E. Chlebowicz
   • W. J. Jachymczyk

   OriginalPaper Pages: 279 - 286

8. Genetic localization of diuron- and mucidin-resistant mutants relative to a group of loci of the mitochondrial DNA controlling coenzyme QH₂-cytochrome c reductase in Saccharomyces cerevisiae

   • Anne-Marie Colson
   • Piotr P. Slonimski

   OriginalPaper Pages: 287 - 298

9. Allelism relationships between diuron-resistant, antimycin-resistant and funiculosin-resistant loci of the mitochondrial map in Saccharomyces cerevisiae

   • A. M. Colson
   • G. Michaelis
   • P. P. Slonimski

   OriginalPaper Pages: 299 - 300

10. Petite deletion map of the mitochondrial oxi3 region in Saccharomyces cerevisiae

    • Giovanna Carignani
    • Geneviève Dujardin
    • Piotr P. Slonimski

    OriginalPaper Pages: 301 - 308

11. Revertants of pleiotropic cross resistance and collateral sensitivity in yeast: A multivariate analysis

    • G. H. Rank
    • J. W. Sheard

    OriginalPaper Pages: 309 - 316

12. Segregation of the mutator property of plasmid R46 from its ultraviolet-protecting property

    • Kristien E. Mortelmans
    • B. A. D. Stocker

    OriginalPaper Pages: 317 - 327

13. The mitochondrially encoded “phantom ATPase” of S. cerevisiae

    • Marie Somlo
    • Mireille Krupa

    OriginalPaper Pages: 329 - 335

14. Repressor synthesis in regulatory mutants of bacteriophage P22

    • A. M. Harvey
    • J. Heil
    • H. H. Prell

    Short Communication Pages: 337 - 339

15. Permutation of the DNA in small-headed virions of coliphage P1

    • Jean T. Walker
    • Shigeru Iida
    • Donald H. Walker Jr.

    Short Communication Pages: 341 - 344