1. Sequence of puff formation inRhynchosciara polytene chromosomes

   • Ellen Mattingly
   • Curtis Parker

   OriginalPaper Pages: 255 - 270

2. Relationship of developmental stage to initiation of replication in polytene nuclei

   • Toby C. Rodman

   OriginalPaper Pages: 271 - 287

3. Die intraspezifische Variabilität des heterochromatischen Armes eines Chromosoms bei der GattungCarabus L. (Coleoptera)

   • Friedrich Weber

   OriginalPaper Pages: 288 - 308

4. Studies on rodent chromosomes

   • S. R. V. Rao
   • V. C. Shah
   • Champaka Seshadri

   OriginalPaper Pages: 309 - 316

5. Unusually large sex chromosomes in the sitatunga (Tragelaphus spekei) and the blackbuck (Antilope cervicapra)

   • Doris H. Wurster
   • Kurt Benirschke
   • H. Noelke

   OriginalPaper Pages: 317 - 323

6. Essai d'analyse biométrique du caryotype de l'Amphibien UrodèleSalamandra salamandra L.

   • A. Kessous
   • H. Caussinus
   • J. C. Beetschen

   OriginalPaper Pages: 324 - 332

7. Germ line and oogenesis during paedogenetic reproduction inHeteropeza pygmaea Winnertz (Diptera: Cecidomyiidae)

   • Samuel Panellius

   OriginalPaper Pages: 333 - 345

8. The chiasma-inducing pheromone of locusts

   • D. J. Nolte

   OriginalPaper Pages: 346 - 358

9. Brachycome lineariloba: A species for experimental cytogenetics

   • S. Smith-White

   OriginalPaper Pages: 359 - 364