1. Forthcoming papers

   Announcement Pages: iii - iii

2. The prebiotic synthesis of carbohydrates: A reassessment

   • Alan W. Schwartz
   • R. M. de Graaf

   OriginalPaper Pages: 101 - 106

3. ThepheA/tyrA/aroF region fromErwinia herbicola: An emerging comparative basis for analysis of gene organization and regulation in enteric bacteria

   • T. Xia
   • G. Zhao
   • R. A. Jensen

   OriginalPaper Pages: 107 - 120

4. Accumulation of adenine and thymine in agroE-homologous operon of an intracellular symbiont

   • Chiaki Ohtaka
   • Hajime Ishikawa

   OriginalPaper Pages: 121 - 126

5. Gypsy homologous sequences inDrosophila subobscura (gypsyDS)

   • T. M. Alberola
   • R. de Frutos

   OriginalPaper Pages: 127 - 135

6. Introns and higher-order structure in the evolution of serpins

   • H. T. Wright

   OriginalPaper Pages: 136 - 143

7. Molecular evolution of the intergenic spacer in the nuclear ribosomal RNA genes of Cucurbitaceae

   • Klaus King
   • Ramon A. Torres
   • Vera Hemleben

   OriginalPaper Pages: 144 - 152

8. Divergence pattern and selective mode in protein evolution: The example of vertebrate myoglobins and hemoglobin chains

   • Jinya Otsuka
   • Kenji Miyazaki
   • Katsuhisa Horimoto

   OriginalPaper Pages: 153 - 181

9. Statistical tests of models of DNA substitution

   • Nick Goldman

   OriginalPaper Pages: 182 - 198

10. Erratum

    Erratum Pages: 199 - 199