1. The plasmon-genic basis of pollen lobedness and tetrad sterility in Solanum verrucosum hybrids and duplicate linkage groups

   • M. M. F. Abdalla
   • J. G. Th. Hermsen

   OriginalPaper Pages: 261 - 270

2. Classification and inheritance study of transverse cephalic curvature index

   • P. Dash Sharma

   OriginalPaper Pages: 271 - 277

3. Pachytene studies in 2n=14 species of Medicago

   • C. B. Gillies

   OriginalPaper Pages: 278 - 298

4. Untersuchungen über polygene suppressor-wirkungen auf semiletalfaktoren des X-chromosoms von Drosophila melanogaster

   • Anna Karlik

   OriginalPaper Pages: 299 - 312

5. Three tests for shared allelic specificities in the B incompatibility factor of Schizophyllum commune

   • Y. Koltin
   • Judith Stamberg
   • G. Simchen

   OriginalPaper Pages: 313 - 318

6. The meiotic behaviour of a haploid pearl millet

   • V. Manga
   • J. V. Pantulu

   OriginalPaper Pages: 319 - 328

7. Rates of change in gene frequency in tetrasomic organisms

   • O. Mayo

   OriginalPaper Pages: 329 - 337

8. Interaction of the mutants sx, tra and dsx in Drosophila melanogaster. Chaetotaxy of the basitarsus of the forelegs in males and females

   • A. S. Mukherjee
   • P. E. Hildreth

   OriginalPaper Pages: 338 - 352

9. Interspecific hybridization between diploid species of Lotus (Leguminosae)

   • B. H. Somaroo
   • W. F. Grant

   OriginalPaper Pages: 353 - 367

10. Location dependent, intragenic recombination in maize

    • Ming-Hung Yu
    • Peter A. Peterson

    OriginalPaper Pages: 368 - 380

11. Book reviews

    • H. W. J. van den Broek
    • G. Gavazzi
    • J. A. J. Metz

    BookReview Pages: 381 - 391