1. Two transcripts of an individual Balbiani ring from the salivary gland cells ofAcricotopus lucidus (Diptera, Chironomidae)

   • Reinhard Panitz

   OriginalPaper Pages: 253 - 268

2. Chromomeres and puffing in experimentally induced polytene chromosomes ofCalliphora erythrocephala

   • D. Ribbert

   OriginalPaper Pages: 269 - 298

3. In vivo sister chromatid exchange in cells of various organs of the mouse

   • N. Kanda
   • H. Kato

   OriginalPaper Pages: 299 - 305

4. Preferential occurrence of sister chromatid exchanges at heterochromatin-euchromatin junctions in the wallaby and hamster chromosomes

   • Hatao Kato

   OriginalPaper Pages: 307 - 316

5. Analysis of visible light-induced sister chromatid exchanges in 5-bromodeoxyuridine-substituted chromosomes

   • J. B. Schvartzman
   • R. Postigo
   • C. Gutiérrez

   OriginalPaper Pages: 317 - 328

6. Genetic instability inDrosophila melanogaster: tandem duplications as monitors of intrastrand exchange

   • M. M. Green
   • G. Lefevre Jr.

   OriginalPaper Pages: 329 - 335

7. DNA replication,³H-cRNA in situ hybridization and C-band patterns in the polycentric chromosomes ofLuzula purpurea Link

   • James H. Ray
   • S. Venketeswaran

   OriginalPaper Pages: 337 - 346

8. The rate of fork movement during DNA replication in mammalian cells

   • Yu. B. Yurov

   OriginalPaper Pages: 347 - 353

9. Satellite DNA properties of the germ line limited DNA and the organization of the somatic genomes in the nematodesAscaris suum andParascaris equorum

   • Günther E. Roth

   OriginalPaper Pages: 355 - 371