1. Dosage compensation of X-linked heat-shock puffs in Drophila pseudoobscura

   • Dorothy A. Pierce
   • John C. Lucchesi

   OriginalPaper Pages: 245 - 254

2. A chromosome rearrangement in Neuvospora that produces viable progeny containing two nucleolus organizers

   • David D. Perkins
   • Namboori B. Raju
   • Edward G. Barry

   OriginalPaper Pages: 255 - 275

3. The sequence organization of bovine DNA

   • John E. Mayfield
   • Julie F. McKenna
   • Bruce S. Lessa

   OriginalPaper Pages: 277 - 294

4. The role of chromosomes in anaphase trigger and nuclear envelope activity in spindle formation

   • Anne-Marie Lambert

   OriginalPaper Pages: 295 - 308

5. Microtubule disorientation in anaphase half-spindles during autosome segregation in crane fly spermatocytes

   • Harald Fuge

   OriginalPaper Pages: 309 - 328

6. Reduced N-methyl-N′-nitro-N-nitrosoguanidine sister chromatid exchange induction in chinese hamster V79 cells pre-exposed to 5-bromodeoxyuridine

   • N. C. Popescu
   • S. A. Amsbaugh
   • J. A. DiPaolo

   OriginalPaper Pages: 329 - 338

7. Restriction endonuclease and molecular analyses of three rat genomes with special reference to chromosome rearrangement and speciation problems

   • George L. Gabor Miklos
   • D. A. Willcocks
   • P. R. Baverstock

   OriginalPaper Pages: 339 - 363

8. Identification of wheat-barley addition lines with N-banding of chromosomes

   • A. K. M. R. Islam

   OriginalPaper Pages: 365 - 373

9. Errata

   Erratum Pages: 375 - 375