1. Association of centrioles and chromosomes observed in preparations of whole-mounted human chromosomes

   • G. F. Bahr
   • Walter F. Engler

   OriginalPaper Pages: 295 - 303

2. A quadrivalent studied in living and fixed grasshopper spermatocytes

   • Dwayne Wise
   • Geoffrey K. Rickards

   OriginalPaper Pages: 305 - 315

3. The puff inducible in region 93D is responsible for the synthesis of the major “heat-shock” polypeptide in Drosophila melanogaster

   • Franco Scalenghe
   • Ferruccio Ritossa

   OriginalPaper Pages: 317 - 327

4. Temperatursensitive Mutanten im Y-chromosom von Drosophila hydei

   • Orilio Leoncini

   OriginalPaper Pages: 329 - 357

5. Functional significance of changes in the shape of the polytene X chromosome in Phryne

   • Stephen Sokoloff
   • Helmut Zacharias

   OriginalPaper Pages: 359 - 384

6. In situ detection and characterization of DNA polymerase activities in the nucleus of eukaryotic cells

   • Ph. Chevaillier
   • M. Philippe

   OriginalPaper Pages: 385 - 399

7. Errata

   Erratum Pages: 400 - 400