1. Kinetic studies of mutation induction by epoxides in Neurospora crassa

   • H. G. Kølmark
   • B. J. Kilbey

   OriginalPaper Pages: 89 - 98

2. The effect of ultraviolet light on the intracellular stability of the DNA of bacteriophages T2 and T4

   • Yukito Masamune

   OriginalPaper Pages: 99 - 110

3. Induction of mutation in phage T4 by extracellular treatment with methylene blue and visible light

   • Martin Brendel

   OriginalPaper Pages: 111 - 115

4. Incidence of XO mice after X-irradiation of spermatogonia

   • A. Léonard
   • J. H. Schröder

   OriginalPaper Pages: 116 - 119

5. Distribution of sperm in the storage organs of the Drosophila melanogaster female at various levels of insemination

   • G. L. Fowler
   • K. E. Eroshevich
   • S. Zimmering

   OriginalPaper Pages: 120 - 122

6. Einfluß von Coffein auf die Reparatur von UV-Prämutationen bei der phr⁻-Mutante von E. coli

   • G. Horneck-Witt
   • R. W. Kaplan

   OriginalPaper Pages: 123 - 130

7. Mechanism of conjugation and recombination in bacteria

   • Andrzej Piekarowicz
   • Mirosŀawa Wŀodarczyk
   • Wŀadysŀaw Kunicki-Goldfinger

   OriginalPaper Pages: 131 - 139

8. Röntgenversuche mit Streptocarpus wendlandii

   • Friedrich Oehlkers

   OriginalPaper Pages: 140 - 154

9. Control of basal level activity of β-galactosidase in Escherichia coli

   • Peter Overath

   OriginalPaper Pages: 155 - 165

10. Chromosomal and episomal control of male-specific properties of E. coli-cells

    • B. Schnegg
    • F. Kaudewitz

    OriginalPaper Pages: 166 - 170

11. Enzyme studies on the products of mitotic gene conversion in Saccharomyces cerevisiae

    • F. K. Zimmermann

    OriginalPaper Pages: 171 - 184

12. A Mutagenic after-effect associated with ethylene oxide in Neurospora crassa

    • B. J. Kilbey
    • H. G. Kølmark

    Short Communication Pages: 185 - 188

13. Amber-Mutanten des Salmonella-Bakteriophagen P22

    • R. A. Kolstad
    • H. H. Prell

    Kurze Mitteilung Pages: 189 - 190