1. Circular and linear structures in chromatin diminution of Cyclops

   • Sigrid Beermann

   OriginalPaper Pages: 321 - 328

2. A cytological analysis of the Scutoid mutation of Drosophila melanogaster, and its induced revertants

   • Michael Ashburner
   • Glynnis Harrington

   OriginalPaper Pages: 329 - 337

3. Isolation and chromosomal localization of ecdysterone-responsive genes in a Drosophila cell line

   • J. L. Couderc
   • J. L. Becker
   • M. L. Pardue

   OriginalPaper Pages: 338 - 342

4. Relationships within the melanogaster species subgroup of the genus Drosophila (Sophophora)

   • F. Lemeunier
   • M. Ashburner

   OriginalPaper Pages: 343 - 351

5. Linkage relationships and chromosomal locations of enzyme-coding genes in pepper, Capsicum annuum

   • Steven D. Tanksley

   OriginalPaper Pages: 352 - 360

6. Somatic karyotype, heterochromatin distribution, and nature of chromosome differentiation in common wheat, Triticum aestivum L. em Thell

   • T. Ryu Endo
   • Bikram S. Gill

   OriginalPaper Pages: 361 - 369

7. Nucleolar organizer activity in wheat, rye and derivatives analyzed by a silver-staining procedure

   • M. C. Cermeño
   • J. Orellana
   • J. R. Lacadena

   OriginalPaper Pages: 370 - 376

8. Chromosome polymorphism and constitutive heterochromatin in the Atlantic salmon, Salmo salar

   • S. E. Hartley
   • M. T. Horne

   OriginalPaper Pages: 377 - 380

9. The morphological sequence of XY pairing in the Norway rat Rattus norvegicus

   • A. M. Joseph
   • Ann C. Chandley

   OriginalPaper Pages: 381 - 386

10. Selective staining of the same set of nucleolar phosphoproteins by silver and Giemsa

    • Charles H. C. M. Buys
    • Jan Osinga

    OriginalPaper Pages: 387 - 396

11. Erratum

    Erratum Pages: 397 - 397