1. Chromosome distribution in a₂₃ chinese hamster fibroblasts

   • Luc Hens

   OriginalPaper Pages: 205 - 217

2. Detection of sister chromatid exchanges by 4′-6-diamidino-2-phenylindole fluorescence

   • M. S. Lin
   • O. S. Alfi

   OriginalPaper Pages: 219 - 225

3. Chromosomes and DNA of Mus

   • Sen Pathak
   • T. C. Hsu

   OriginalPaper Pages: 227 - 234

4. Anomalous development and differential DNA replication in the X-Chromosome of a Drosophila hybrid

   • Barbara Meer

   OriginalPaper Pages: 235 - 260

5. Comparative study of human chromosome replication in primary cultures of embryonic fibroblasts and in cultures of peripheral blood leucocytes

   • Alexandra A. Prokofieva-Belgovskaya
   • Stanislav I. Slesinger
   • Juliet M. Atayeva

   OriginalPaper Pages: 261 - 270

6. The transcripts of Balbiani rings from Chironomus thummi

   • Edgar Serfling

   OriginalPaper Pages: 271 - 283

7. The pattern of polytene chromosome synapsis in Drosophila species and interspecific hybrids

   • M. B. Evgen'ev
   • G. G. Polianskaya

   OriginalPaper Pages: 285 - 295

8. The segregation pattern of a translocation quadrivalent

   • A. Shalev
   • G. Ladizinsky

   OriginalPaper Pages: 297 - 308