1. Recombination between mutants ofPhycomyces with abnormal phototropism

   • A. P. Eslava
   • M. I. Alvarez
   • K. Kong

   OriginalPaper Pages: 235 - 241

2. Evidence that the geneuvrB is indispensable for a polymerase I deficient strain ofEscherichia coli K-12

   • Mitsuoki Morimyo
   • Yoshie Shimazu

   OriginalPaper Pages: 243 - 250

3. Influence of cultural conditions and mutations on the composition of the outer membrane proteins ofEscherichia coli

   • Ben Lugtenberg
   • Roel Peters
   • Wim Berendsen

   OriginalPaper Pages: 251 - 262

4. Heptose-deficient mutants ofEscherichia coli K12 deficient in up to three major outer membrane proteins

   • Wim van Alphen
   • Ben Lugtenberg
   • Wim Berendsen

   OriginalPaper Pages: 263 - 269

5. The product of theade1 gene inSchizosaccharomyces pombe: A bifunctional enzyme catalysing two distinct steps in purine biosynthesis

   • Rudolf Fluri
   • Alan Coddington
   • Urs Flury

   OriginalPaper Pages: 271 - 282

6. Lethal and mutagenic effects of nitrosoguanidine on synchronizedChlamydomonas

   • R. W. Lee
   • R. F. Jones

   OriginalPaper Pages: 283 - 289

7. Phage T4 infection restricts rRNA synthesis byE. coli RNA polymerase

   • Francisco E. Baralle
   • Andrew Travers

   OriginalPaper Pages: 291 - 297

8. Genetic evidence for ribosomal antisuppressors inPodospora anserina

   • Marguerite Picard-Bennoun

   OriginalPaper Pages: 299 - 306

9. Mapping of thepolA locus ofEscherichia coli K12: Orientation of the amino- and carboxy-termini of the cistron

   • William S. Kelley
   • Nigel D. F. Grindley

   OriginalPaper Pages: 307 - 314

10. Properties of plasmids constructed by the in vitro insertion of DNA fromRhizobium leguminosarum orProteus mirabilis into RP4

    • A. E. Jacob
    • Janet M. Cresswell
    • J. E. Beringer

    OriginalPaper Pages: 315 - 323

11. DNA homologies among homothallic, pseudo-homothallic and heterothallic species ofNeurospora

    • S. K. Dutta
    • Inam Sheikh
    • W. H. Nelson

    OriginalPaper Pages: 325 - 330

12. ColE plasmid replication in DNA polymerase I-deficient strains ofEscherichia coli

    • William Tacon
    • David Sherratt

    OriginalPaper Pages: 331 - 335

13. Characterization of a ts β′ mutant RNA polymerase ofEscherichia coli

    • G. Gross
    • D. A. Fields
    • E. K. F. Bautz

    OriginalPaper Pages: 337 - 341

14. Relative ribosomal RNA cistron multiplicity in oocytes and postembryonic stages of the eutelic nematodePanagrellus silusiae

    • J. Scott Noble
    • M. Haight
    • J. Pasternak

    OriginalPaper Pages: 343 - 346