1. Ultrastructural analysis of Balbiani ring genes of Chironomus pallidivittatus in different states of Balbiani ring activity

   • Hans-H. Trepte

   OriginalPaper Pages: 433 - 445

2. Cytological structure of the native polytene salivary gland nucleus of Drosophila melanogaster: a microsurgical analysis

   • Ronald J. Hill
   • Susan Whytock

   OriginalPaper Pages: 446 - 456

3. Immunocytochemical localization of DNA in synaptonemal complexes of rat and mouse spermatocytes, and of chick oocytes

   • Gerardo H. Vázquez Nin
   • Ernestina Flores
   • Ricardo Benavente

   OriginalPaper Pages: 457 - 463

4. Spreading the synaptonemal complex of Neurospora crassa

   • Benjamin C. Lu

   OriginalPaper Pages: 464 - 472

5. HeLa D98/AH-2 studied by chromosome painting and conventional cytogenetical techniques

   • Doris Rueß
   • Li-Zhin Ye
   • Caspar Grond-Ginsbach

   OriginalPaper Pages: 473 - 477

6. Chromosome length and DNA loop size during early embryonic development of Xenopus laevis

   • Gioacchino Micheli
   • Anna Rosa Ciofi Luzzatto
   • Franca Pelliccia

   OriginalPaper Pages: 478 - 483

7. Rapid, localized amplification of a unique satellite DNA family in the rodent Microtus chrotorrhinus

   • William S. Modi

   OriginalPaper Pages: 484 - 490

8. Supernumerary heterochromatic segments associated with the nucleolar chromosomes of Pyrgomorpha conica (Orthoptera) contain methylated rDNA sequences

   • José A. Suja
   • Carmen Antonio
   • Julio S. Rufas

   OriginalPaper Pages: 491 - 499

9. Large arrays of tandemly repeated DNA sequences in the green alga Chlamydomonas reinhardtii

   • Trudy Hails
   • Mark Jobling
   • Anil Day

   OriginalPaper Pages: 500 - 507