1. Untersuchungen über das Pollenschlauchwachstum von Pisum sativum und einiger mutanten

   • Gisela Wolff

   OriginalPaper Pages: 241 - 246

2. Ultimate probability of fixation and time to fixation or loss of a gene under a variable fitness model

   • R. F. Nassar
   • R. D. Cook

   OriginalPaper Pages: 247 - 254

3. Studies of the functional activity of mitochondria and cell ultrastructure of the coleoptile in wheat, Agropyron and their hybrids (incomplete amphidiploids) during decreasing temperature

   • N. B. Khristolyubova
   • V. V. Khvostova
   • T. K. Usova

   OriginalPaper Pages: 255 - 261

4. Surface structure of the compound eye of various Drosophila species and eye mutants of Drosophila melanogaster

   • Bertha F. A. Stumm-Tegethoff
   • A. W. Dicke

   OriginalPaper Pages: 262 - 265

5. Effect of X-irradiation on the size of the mutated sector in diploid and tetraploid rice

   • S. R. Sree Rangasamy
   • K. Sree Ramulu

   OriginalPaper Pages: 266 - 269

6. A procedure for computer simulation of linkage with interference

   • J. L. Fyfe

   OriginalPaper Pages: 270 - 271

7. Direct and correlated responses to selection for increased postweaning gain in mice

   • T. J. Lasalle
   • J. M. White
   • W. E. Vinson

   OriginalPaper Pages: 272 - 277

8. Genetical and ultrastructural aspects of self and cross incompatibility in interspecific hybrids between self-compatible Lycopersicum esculentum and self-incompatible L. peruvianum

   • D. De Nettancourt
   • M. Devreux
   • G. Sarfatti

   OriginalPaper Pages: 278 - 288