1. Preface

   • Masa-Toshi Yamamoto

   EditorialNotes Pages: 83 - 83

2. Mechanism of induction ofBar-like eye malformation by transient overexpression ofBar homeobox genes inDrosophila melanogaster

   • Tetsuya Kojima
   • Masaki Sone
   • Kaoru Saigo

   OriginalPaper Pages: 85 - 91

3. W-heterochromatin of chicken; its unusual DNA components, late replication, and chromatin structure

   • Noriyuki Suka
   • Yoshinobu Shinohara
   • Shigeki Mizuno

   OriginalPaper Pages: 93 - 105

4. Variable X chromosome inactivation patterns in near-tetraploid murine EC × somatic cell hybrid cells differentiatedin vitro

   • Nobuo Takagi

   OriginalPaper Pages: 107 - 117

5. Genetics and biology of the sawfly,Athalia rosae (Hymenoptera)

   • K. Oishi
   • M. Sawa
   • Y. Kageyama

   OriginalPaper Pages: 119 - 127

6. Genetics of food preference inDrosophila sechellia

   • Isaya Higa
   • Yoshiaki Fuyama

   OriginalPaper Pages: 129 - 136

7. In search of new mutants in cell-signaling systems of the nematodeCaenorhabditis elegans

   • Isao Katsura

   OriginalPaper Pages: 137 - 146

8. Developmental profile of P element transposition inDrosophila somatic cells

   • Shin Togashi
   • Ryu Ueda
   • Tadashi Miyake

   OriginalPaper Pages: 147 - 152

9. Positive and negative signaling mechanisms in the regulation of photoreceptor induction in the developingDrosophila retina

   • Daisuke Yamamoto

   OriginalPaper Pages: 153 - 164

10. Meiotic mutations from natural populations ofDrosophila melanogaster

    • A. H. Yamamoto
    • K. Muramatsu
    • M. -T. Yamamoto

    OriginalPaper Pages: 165 - 173

11. Hybrid lethal systems in theDrosophila melanogaster species complex

    • Kyoichi Sawamura
    • Takao K. Watanabe
    • Masa-Toshi Yamamoto

    OriginalPaper Pages: 175 - 185

12. Hotspots of meiotic recombination in the mouse major histocompatibility complex

    • Toshihiko Shiroishi
    • Tomoko Sagai
    • Kazuo Moriwaki

    OriginalPaper Pages: 187 - 196