1. Fertility in the genusBrassica

   • Alexander Nelson

   OriginalPaper Pages: 109 - 135

2. The influence of the “purple” gene on the crossing-over between “black” and “cinnabar” inDrosophila melanogaster

   • A. S. Serebrovsky

   OriginalPaper Pages: 137 - 175

3. The attachments of chromosomes at the reduction division in flowering plants

   • John Belling

   OriginalPaper Pages: 177 - 205

4. Genetic studies in poultry. V. On a case of pied plumage

   • R. C. Punnett
   • M. S. Pease

   OriginalPaper Pages: 207 - 218

5. Dominant black in cats and its bearing on the question of the tortoiseshell males—A criticism

   • Ruth C. Bamber
   • E. Catherine Herdman

   OriginalPaper Pages: 219 - 221

6. The hypothesis of chromosome affinity and the phenomenon of suppression of characters on crossing

   • Edmund Malinowski

   OriginalPaper Pages: 223 - 231

7. Sex-ratio in pheasant species-crosses

   • Rose Haig Thomas
   • Julian S. Huxley

   OriginalPaper Pages: 233 - 246

8. Formation and morphology ofSolanum chimaeras

   • C. A. Jørgensen
   • M. B. Crane

   OriginalPaper Pages: 247 - 273