1. The cytogenetic systems of grasshoppers and locusts

   • Bernard John
   • Michael Freeman

   OriginalPaper Pages: 105 - 119

2. Comparative study of the function of polytene chromosomes in laboratory stocks ofDrosophila melanogaster and thel ₍₃₎tl mutant (lethal tumorous larvae)

   • I. F. Zhimulev
   • E. S. Belyaeva
   • V. A. Lychev

   OriginalPaper Pages: 121 - 136

3. Das Puffmuster der Borstenapparat-Chromosomen vonSarcophaga barbata

   • Hans-Heinrich Trepte

   OriginalPaper Pages: 137 - 164

4. Is the centromeric heterochromatin ofMus musculus late replicating?

   • Orlando J. Miller

   OriginalPaper Pages: 165 - 170

5. Persistent discontinuities in late replicating DNA during meiosis inLilium

   • Yasuo Hotta
   • Herbert Stern

   OriginalPaper Pages: 171 - 182

6. Transcription of genetic information in amphibian oocytes

   • John Sommerville
   • David B. Malcolm

   OriginalPaper Pages: 183 - 208