1. Dr. D. Inoue, Prof. Dr. J. Wittbrodt; Centre of Organismal Studies; University of Heidelberg; Im Neuenheimer Feld 230 69120 Heidelberg Germany
2. Prof. Dr. O. J. Gruss; Institute of Genetics; University of Bonn; Karlrobert-Kreiten-Str.13 53115 Bonn Germany