1. Instability at the k2 Mdh1-n y20 chromosomal region in soybean

   • X.-F. Chen
   • R. G. Palmer

   ORIGINAL PAPER Pages: 309 - 318

2. Differential effects of caffeine on DNA damage and replication cell cycle checkpoints in the fission yeast Schizosaccharomyces pombe

   • Fekret Osman
   • Shirley McCready

   ORIGINAL PAPER Pages: 319 - 334

3. The genes encoding light-harvesting subunits of Cyclotella cryptica (Bacillariophyceae) constitute a complex and heterogeneous family

   • M. Eppard
   • E. Rhiel

   ORIGINAL PAPER Pages: 335 - 345

4. A second gene for Type I signal peptidase in Bradyrhizobium japonicum, sipF, is located near genes involved in RNA processing and cell division

   • A. Bairl
   • P. Müller

   ORIGINAL PAPER Pages: 346 - 356

5. Recombination between chloroplast genomes of Trachystoma ballii and Brassica juncea following protoplast fusion

   • A. Baldev
   • K. Gaikwad
   • V. L. Chopra

   ORIGINAL PAPER Pages: 357 - 361

6. Effect of ploidy and homozygosity on transgene expression in primary tobacco transformants and their androgenetic progenies

   • A. Beaujean
   • R. S. Sangwan
   • B. S. Sangwan-Norreel

   ORIGINAL PAPER Pages: 362 - 371

7. A maize Myb homolog is encoded by a multicopy gene complex

   • S. Chopra
   • P. Athma
   • T. Peterson

   ORIGINAL PAPER Pages: 372 - 380

8. Insertion specificity and trans-activation of IS801

   • G. Y. Richter
   • K. Björklöf
   • D. Mills

   ORIGINAL PAPER Pages: 381 - 387

9. Rice has two distinct classes of protein kinase genes related to SNF1 of Saccharomyces cerevisiae, which are differently regulated in early seed development

   • Makoto Takano
   • Hiromi Kajiya-Kanegae
   • Shoshi Kikuchi

   ORIGINAL PAPER Pages: 388 - 394

10. Replication-dependent and selection-induced mutations in respiration-competent and respiration-deficient strains of Saccharomyces cerevisiae

    • Erich Heidenreich
    • Ulrike Wintersberger

    ORIGINAL PAPER Pages: 395 - 400