1. The mating system of a homothallic fission yeast

   • G. B. Calleja
   • Byron F. Johnson
   • A. P. James

   OriginalPaper Pages: 1 - 6

2. Map position of the replication terminus on the Escherichia coli chromosome

   • Jacqueline Louarn
   • Josette Patte
   • Jean-Michel Louarn

   OriginalPaper Pages: 7 - 11

3. A streptomycin-resistant line of Nicotiana sylvestris unable to flower

   • P. Maliga
   • Zsuzsa R. Kiss
   • Gabriella Lázár

   OriginalPaper Pages: 13 - 15

4. Mutagenesis and repair deficiencies of Escherichia coli umuC mutants are suppressed by the plasmid pKM101

   • Graham C. Walker
   • Patricia P. Dobson

   OriginalPaper Pages: 17 - 24

5. Evidence for endonucleolytic cleavage at the 5′-proximal segment of the trp messenger RNA in Escherichia coli

   • Yasunobu Kano
   • Fumio Imamoto

   OriginalPaper Pages: 25 - 30

6. The arrangement of nucleotides in the coding regions of natural templates

   • J. Sedláček
   • M. Fábry
   • A. Vítek

   OriginalPaper Pages: 31 - 36

7. Gene expression in Drosophila: Post-translational modification of aldehyde oxidase and xanthine dehydrogenase

   • Victoria Finnerty
   • Margaret McCarron
   • George B. Johnson

   OriginalPaper Pages: 37 - 43

8. Catalase anabolism in yeast: Loss of regulation by oxygen of catalase apoprotein synthesis after mutation

   • Christin Berte
   • André Sels

   OriginalPaper Pages: 45 - 52

9. Characterisation of Tn1721, a new transposon containing tetracycline resistance genes capable of amplification

   • Rüdiger Schmitt
   • Erwin Bernhard
   • Ralf Mattes

   OriginalPaper Pages: 53 - 65

10. Different behaviour of Xbb ⁺ and Xbb chromosomes in D. melanogaster with only one nucleolus organizer

    • C. Malva
    • G. Gargiulo
    • G. La Mantia

    OriginalPaper Pages: 67 - 72

11. “Nick translation” in Escherichia coli rep strains deficient in DNA polymerase I activities

    • Christian Hours
    • David T. Denhardt

    OriginalPaper Pages: 73 - 80

12. Electron microscopic analysis of the yeast mitochondrial DNA segment conferring chloramphenicol resistance

    • J. Lazowska

    OriginalPaper Pages: 81 - 92

13. Constitutive expression in Escherichia coli of the Neurospora crassa structural gene encoding the inducible enzyme catabolic dehydroquinase

    • Judith A. Hautala
    • Michael Schweizer
    • Sidney R. Kushner

    OriginalPaper Pages: 93 - 98

14. Mapping of the loci involved in the catabolic oxidation of L-hydroxyproline in Pseudomonas aeruginosa PAO

    • Herbert T. Manoharan
    • Kunthala Jayaraman

    OriginalPaper Pages: 99 - 105

15. Mechanism of conjugation

    • Aleksandra Blinkowa
    • Grazyna Gawecka

    OriginalPaper Pages: 107 - 111

16. Simultaneous transformation of Escherichia coli by pairs of compatible and incompatible plasmid DNA molecules

    • A. Weston
    • G. O. Humphreys
    • J. R. Saunders

    OriginalPaper Pages: 113 - 118