1. Spermiogenesis in an iceryine coccid, Steatococcus tuberculatus morrison

   • Montrose J. Moses

   OriginalPaper Pages: 373 - 429

2. Dosiskompensation und Dosiseffekt für RNS-Synthese in Chromosomen-Puffs von Drosophila melanogaster

   • Günter Korge

   OriginalPaper Pages: 430 - 464

3. The somatic chromosomes of a wild population of rats: numerical polymorphism

   • F. M. Badr
   • Ragaa S. Badr

   OriginalPaper Pages: 465 - 475

4. Chromosome number and genetic system in several Trifolium species related to T. alexandrinum

   • E. Putiievsky
   • J. Katznelson

   OriginalPaper Pages: 476 - 482