1. Identification and quantitation of human chromosomes by primedin situ synthesis

   • John R. Gosden

   Technical Viewpoint Pages: 331 - 334

2. Cytogenetic and molecular analysis of the satellite DNA of the genusCtenomys (Rodentia Octodontidae) from Uruguay

   • A. Novello
   • M. N. Cortinas
   • H. Musto

   Technical Viewpoint Pages: 335 - 339

3. Evidence for a sequence-directed conformation periodicity in the genomic highly repetitive DNA detectable with single-strand-specific chemical probe potassium permanganate

   • Roman Matyášek
   • Jaroslav Fulneček
   • Milan Bezděk

   Technical Viewpoint Pages: 340 - 349

4. Meiotic behavior of the X1X2Y1Y2 quadrivalent of the primateAlouatta caraya

   • M. I. Rahn
   • M. Mudry
   • A. J. Solari

   Technical Viewpoint Pages: 350 - 356

5. TheTy1-copia group retrotransposons ofAllium cepa are distributed throughout the chromosomes but are enriched in the terminal heterochromatin

   • Stephen R. Pearce
   • Uta Pich
   • Amar Kumar

   Technical Viewpoint Pages: 357 - 364

6. Genomic instability in MycER-activated Rat1A-MycER cells

   • Sabine Mai
   • Monika Fluri
   • Konrad Huppi

   Technical Viewpoint Pages: 365 - 371

7. Autosomal location of a new subtype of 1.688 satellite DNA ofDrosophila melanogaster

   • Ana Losada
   • Alfredo Villasante

   Technical Viewpoint Pages: 372 - 383

8. Redistribution of ribosomal DNA after blocking of transcription induced by actinomycin D

   • Christian Schöfer
   • Klara Weipoltshammer
   • Franz Wachtler

   Technical Viewpoint Pages: 384 - 391

9. Chromosomal localization of a highly repeatedEcoRI DNA fragment inMegoura viciae (Homoptera, Aphididae) by nick translation and fluorescencein situ hybridization

   • Davide Bizzaro
   • Gian Carlo Manicardi
   • Umberto Bianchi

   Technical Viewpoint Pages: 392 - 396

10. Rapid isolation of recombinant lambda phage DNA for use in fluorescence in situ hybridization

    • S. A. Wilcox
    • R. Toder
    • J. W. Foster

    Short Communications Pages: 397 - 404

11. Physical Mapping of Plant Chromosome

    Announcement Pages: 404 - 404

12. 13th International Chromosome Conference

    Announcement Pages: 404 - 406

13. Arylsulfatase A lysosomal enzyme Map position 22q13.3

    • E. Woollatt
    • J. S. Harvey
    • C. P. Morris

    Human Gene Mapping Report Pages: 407 - 407

14. Special announcement on behalf of the commission on plant gene nomenclature

    Announcement Pages: 407 - 407