1. A genetic analysis of a mutant of Escherichia coli with a defect in the assembly of ribosomes

   • G. Turnock

   OriginalPaper Pages: 295 - 312

2. The induction and characterization of recessive suppressors of arg-2 in Schizophyllum commune

   • Dallice I. Mills
   • Albert H. Ellingboe

   OriginalPaper Pages: 313 - 320

3. Dominance and recessiveness at the protein level in mutant x wildtype crosses in Saccharomyces cerevisiae

   • F. K. Zimmermann
   • I. Schmiedt
   • A. M. A. ten Berge

   OriginalPaper Pages: 321 - 330

4. Chromosome chromatid rearrangements resulting from the mitotic crossing-over between sister-chromatids in ring chromosomes of Crepis capillaris

   • N. P. Dubinin
   • L. S. Nemtseva

   OriginalPaper Pages: 331 - 338

5. An amber map of Salmonella phage P22

   • R. A. Kolstad
   • H. H. Prell

   OriginalPaper Pages: 339 - 350

6. A map of four genes specifying enzymes involved in catabolism of nucleosides and deoxynucleosides in Escherichia coli

   • S. I. Ahmad
   • R. H. Pritchard

   OriginalPaper Pages: 351 - 359

7. Eine Pigmentmangelmutante bei dem Polychaeten Platynereis dumerilii

   • Albrecht Fischer

   OriginalPaper Pages: 360 - 370

8. Two insertions in the galactose operon having different sizes but homologous DNA sequences

   • Georg Michaelis
   • Heinz Saedler
   • Peter Starlinger

   OriginalPaper Pages: 371 - 377

9. N-methyl-N′-nitro-N-nitrosoguanidine mutagenesis and lethality in Aerobacter (Klebsiella) aerogenes

   • C. Beach
   • A. C. R. Dean

   OriginalPaper Pages: 378 - 382

10. Map location of arginyl-tRNA synthetase mutations in Escherichia coli K-12

    • Pearl Horn Cooper
    • Irvin N. Hirshfield
    • Werner K. Maas

    OriginalPaper Pages: 383 - 390