The developmental genetics of dextrality and sinistrality in the gastropodLymnaea peregra Gary FreemanJudith W. Lundelius OriginalPaper Pages: 69 - 83
The effects of prostomium and proventriculus removal on sex determination and gametogenesis inTyposyllis pulchra (Polychaeta: Syllidae) Albert Eugene HeacoxPaul Clemens Schroeder OriginalPaper Pages: 84 - 90
A quantitative and qualitative study of proteins of the gonadal extract during growth and phases of reproductive activity in the snailHelix aspersa Müller Marie-Ange Bôle-RichardBernadette Griffond OriginalPaper Pages: 91 - 94
Early egg contractions and patterned parasynchronous cleavage in a living insect egg David Mark MiyamotoJitse Michiel van der Meer OriginalPaper Pages: 95 - 102
Sequential gene activation by ecdysteroids in polytene chromosomes ofDrosophila melanogaster Geoff Richards OriginalPaper Pages: 103 - 111
The morphogenetic significance of the first quartet micromeres for the development of the snailBithynia tentaculata W. I. van DamN. H. Verdonk OriginalPaper Pages: 112 - 118
Primary hypoblast development in the chick Clement WeinbergerIrving Brick OriginalPaper Pages: 119 - 126
Primary hypoblast development in the chick Clement WeinbergerIrving Brick OriginalPaper Pages: 127 - 133
Development of complete embryos in drastically deformed leafhopper eggs Otto Vogel OriginalPaper Pages: 134 - 136
Hair regeneration in a solfugid chemotactile sensillum during moulting (Arachnida: Solifugae) Joachim Haupt OriginalPaper Pages: 137 - 142