1. Editorial

   EditorialNotes Pages: i - i

2. Cat gene frequencies in the San Francisco Bay region, California

   • B. Blumenberg
   • G. Blumenberg

   OriginalPaper Pages: 385 - 389

3. Chromosomal polymorphism and G-banding patterns in the wild boar (Sus scrofa L.) from the Netherlands

   • A. A. Bosma

   OriginalPaper Pages: 391 - 399

4. Variation in coat colour gene frequencies and selection in the cats of Scotland

   • J. M. Clark

   OriginalPaper Pages: 401 - 412

5. Giemsa C-banding within the genus Glossina (Diptera, Glossinidae)

   • E. D. G. Davies
   • D. I. Southern

   OriginalPaper Pages: 413 - 418

6. Chromosome studies in the mammalian subfamily Antilopinae

   • M. Effron
   • M. H. Bogart
   • K. Benirschke

   OriginalPaper Pages: 419 - 444

7. Cytological studies of the two-spotted spider mite Tetranychus urticae Koch (Tetranychidae, trombidiformes). I: Meiosis in eggs

   • C. C. M. Feiertag-Koppen

   OriginalPaper Pages: 445 - 456

8. Dominance relationships between alleles at the Pallida locus in Antirrhinum majus. I the alleles car, tub and tin. A correction

   • R. I. Gilbert

   Erratum Pages: 457 - 458

9. Sperm dysfunction in sex ratio males of Drosophila subobscura

   • E. Hauschteck-Jungen
   • B. Maurer

   OriginalPaper Pages: 459 - 477

10. Mitotic and meiotic behavior of the chromosomes of the octet strain of Chlamydomonas reinhardtii

    • Marjorie P. Maguire

    OriginalPaper Pages: 479 - 502

11. Drosophila: Eine beschreibung aus dem jahre 1754

    • Gerhard H. Müller

    OriginalPaper Pages: 503 - 509

12. A cytogenetical study of Glossina fuscipes fuscipes including a comparison of the polytene chromosome maps with those of Glossina austeni (Diptera, Glossinidae)

    • P. E. Pell
    • D. I. Southern

    OriginalPaper Pages: 511 - 528

13. A modifier mapped in the mouse

    • M. E. Wallace

    BriefCommunication Pages: 529 - 529