1. Coming to grips with a complex matter

   • Josef Loidl

   Chromosoma Focus Pages: 289 - 292

2. Fertile male mice with three sex chromosomes: Evidence that infertility in XYY male mice is an effect of two Y chromosomes

   • Patricia A. Hunt
   • Eva M. Eicher

   OriginalPaper Pages: 293 - 299

3. The organization of macronuclear DNA sequences associated with C₄A₄ repeats in the polytene chromosomes of Stylonychia lemnae

   • Stefan Stoll
   • Michael Schmid
   • Hans J. Lipps

   OriginalPaper Pages: 300 - 304

4. Differential mechanisms governing segregation of a univalent in oocytes and spermatocytes of Drosophila melanogaster

   • Jaakko Puro

   OriginalPaper Pages: 305 - 314

5. The Adh in Drosophila: Chromosomal location and restriction analysis in species with different phylogenetic relationships

   • N. Visa
   • G. Marfany
   • R. Gonzàlez-Duarte

   OriginalPaper Pages: 315 - 322

6. The fine structure of the mitotic chromosome core (scaffold) of Trilophidia annulata

   • Jian Zhao
   • Shui Hao
   • Miao Xing

   OriginalPaper Pages: 323 - 329

7. Localization of specific repetitive DNA sequences in individual rice chromosomes

   • Hsin-Kan Wu
   • Mei-Chu Chung
   • Ray Wu

   OriginalPaper Pages: 330 - 338

8. Chromatin behaviour under influence of puromycin and 6-DMAP at different stages of mouse oocyte maturation

   • Maria S. Szöllösi
   • Pascale Debey
   • Dominique Vautier

   OriginalPaper Pages: 339 - 354