1. The cytogenetic systems of grasshoppers and locusts

   • Bernard John

   OriginalPaper Pages: 123 - 146

2. DNA-Replikation und Chromosomenstruktur von Mesostoma (Turbellaria)

   • Friedhelm Göltenboth

   OriginalPaper Pages: 147 - 181

3. The localization of “ordinary” sex-linked genes in section 20 of the polytene X chromosome of Drosophila melanogaster

   • Abraham Schalet
   • George Lefevre Jr.

   OriginalPaper Pages: 183 - 202

4. The mitotic and endomitotic nuclear cycle in Allium carinatum

   • W. Nagl

   OriginalPaper Pages: 203 - 212

5. Kinetochore and microtubules in two members of Chlorophyceae, Cladophora fracta and Spirogyra majuscula

   • Sanjida Mughal
   • M. B. E. Godward

   OriginalPaper Pages: 213 - 229

6. Differentiation of the synaptonemal complex and the kinetochore in Locusta spermatocytes studied by whole mount electron microscopy

   • S. J. Counce
   • G. F. Meyer

   OriginalPaper Pages: 231 - 253