1. Autosyndesis and structural hybridity in F₁-hybrid Helianthus tuberosus L. x Helianthus annuus L. and their sequences

   • Dontcho Kostoff

   OriginalPaper Pages: 285 - 300

2. Local pigment suppression in the flowers ofDahlia variabilis Desf.

   • Tine Tammes
   • Anneke F. Groeneveld-Huisman

   OriginalPaper Pages: 301 - 324

3. Canna crosses

   • J. A. Honing

   OriginalPaper Pages: 325 - 344

4. The heredity of feeble-mindedness

   • J. Sanders
   • G. D. Swanenburg de Veye

   OriginalPaper Pages: 345 - 368

5. Lethality and abnormal condition of the pelage of the latvian mouse (dominant-naked)

   • Wilhelmina J. P. R. van Ebbenhorst Tengbergen

   OriginalPaper Pages: 369 - 385

6. The influence of low temperature on the frequency of translocations produced by X-rays inDrosophila melanogaster

   • George H. Mickey

   OriginalPaper Pages: 386 - 407

7. Iris pigmentation in domestic pigeons

   • W. F. Hollander
   • R. D. Owen

   OriginalPaper Pages: 408 - 419

8. Pairing behaviour and chiasma formation in plants with a structurally heterozygous pair in Pisum

   • E. R. Sansome

   OriginalPaper Pages: 420 - 433

9. The incidence of the various genotypes in a population showing a sex-linked recessive character

   • A. B. Droogleever Fortuyn

   OriginalPaper Pages: 434 - 444