1. A ring-X-chromosome in part of the somatic cells of a patient with some characteristics of the Turner syndrome

   • T. W. J. Hustinx
   • G. B. A. Stoelinga

   OriginalPaper Pages: 1 - 14

2. Temperature sensitive periods ofcubitus interruptus mutants inDrosophila melanogaster

   • W. Scharloo
   • A. M. Nieuwenhuijs

   OriginalPaper Pages: 15 - 27

3. The rôle of the plastome in evolution of the genusOenothera

   • W. Stubbe

   OriginalPaper Pages: 28 - 33

4. Comparative studies on sex chromosomes in different species

   • P. Eberle

   OriginalPaper Pages: 34 - 46

5. The inheritance of blood groups in the blood group system B in cattle

   • J. Bouw
   • G. E. Nasrat
   • C. Buys

   OriginalPaper Pages: 47 - 58

6. Investigations into the inter-relationships ofPhaseolus vulgaris L. andP. Coccineus LAM

   • H. Thomas

   OriginalPaper Pages: 59 - 74

7. Genetic control of flowering inpisum sativum L.

   • D. G. Rowlands

   OriginalPaper Pages: 75 - 94

8. Karyotype studies in seven species of cyprinidae

   • R. P. Nayyar

   OriginalPaper Pages: 95 - 104

9. Book review

   • Sien-Chiue Yu
   • W. Scharloo

   BookReview Pages: 105 - 107

10. Analysis of chromosome 4 inDrosophila melanogaster. I. Spontaneous and X-ray-induced lethals

    • B. Hochman
    • H. Gloor
    • M. M. Green

    OriginalPaper Pages: 109 - 126

11. UV-induced mitotic recombination in thepaba ₁ region ofAspergillus nidulans

    • G. J. O. Jansen

    Preliminary Note Pages: 127 - 131

12. Hereditary osteoarthritis in dairy cows

    • K. Sittmann
    • J. W. Kendrick

    OriginalPaper Pages: 132 - 140

13. A diallel cross for mating speeds inDrosophila melanogaster

    • P. A. Parsons

    OriginalPaper Pages: 141 - 151

14. Studies on the inheritance in the red raspberry of immunities from three nematode-borne viruses

    • D. L. Jennings

    OriginalPaper Pages: 152 - 164

15. Book review

    • J. T. Wiebes
    • G. J. Eaton
    • G. J. P. A. Anders

    BookReview Pages: 165 - 169

16. Notes on chromosome behaviour in the spermatogenesis of the damselflyEnallagma cyathigerum (Charp.) (Odonata: Coenagrionidae)

    • Janny M. van Brink
    • B. Kiauta

    OriginalPaper Pages: 171 - 174

17. Egg lengths inDrosophila melanogaster and correlated responses to selection

    • P. A. Parsons

    OriginalPaper Pages: 175 - 181

18. A heritable aberrant sex-ratio inDrosophila melanogaster reducing the number of females

    • G. G. M. Schulten

    OriginalPaper Pages: 182 - 196

19. Contributions to the cytology of endosperm in some angiosperms-VIII.Chrysanthemum carinatum L.

    • B. M. Kapoor
    • S. L. Tandon

    OriginalPaper Pages: 197 - 204

20. Cytogenetic studies inClarkia, section primigenia. III. Cytogenetics of monosomics inClarkia amoena

    • R. Snow

    OriginalPaper Pages: 205 - 235

21. Phenotypic variability of an induced mutant of annual chrysanthemum

    • R. S. Rana

    OriginalPaper Pages: 236 - 240

22. Genetic studies of the Syrian hamster

    • R. Robinson

    OriginalPaper Pages: 241 - 250

23. Book review

    • L. Bosch
    • J. Sybenga
    • B. Wildervanck

    BookReview Pages: 251 - 256

24. C. L. Rümke 1898–1964

    Announcement Pages: 257 - 258

25. Isolation of nutritional mutants inArabidopsis thaliana

    • W. J. Feenstra

    OriginalPaper Pages: 259 - 269

26. Genetic differentiation within laboratory populations ofDrosophila pseudoobscura

    • J. A. Thomson

    OriginalPaper Pages: 270 - 286

27. Intra-chromosomal position interference inNeurospora crassa

    • V. Prakash

    OriginalPaper Pages: 287 - 322

28. Frequencies of genotypes of relatives, as determined by stochastic matrices

    • W. H. Richardson

    OriginalPaper Pages: 323 - 354

29. Book review

    • C. L. Rümke
    • S. J. Geerts
    • K. Bakker

    BookReview Pages: 355 - 379

30. New journals

    Announcement Pages: 380 - 380