1. Random walking

   • Thomas H. Jukes

   BriefCommunication Pages: 351 - 352

2. Model for prebiotic pyrophosphate formation: Condensation of precipitated orthophosphate at low temperature in the absence of condensing or phosphorylating agents

   • Marcelo Hermes-Lima

   OriginalPaper Pages: 353 - 358

3. Origin of tetrapods inferred from their mitochondrial DNA affiliation to lungfish

   • Axel Meyer
   • Allan C. Wilson

   OriginalPaper Pages: 359 - 364

4. Cytoplasmic male sterility inBeta is associated with structural rearrangements of the mitochondrial DNA and is not due to interspecific organelle transfer

   • Christer Halldén
   • Christina Lind
   • Bengt O. Bengtsson

   OriginalPaper Pages: 365 - 372

5. Association between mitochondrial DNA and morphological evolution in Canada geese

   • Carol E. Van Wagner
   • Allan J. Baker

   OriginalPaper Pages: 373 - 382

6. A naturally occurring horizontal gene transfer from a eukaryote to a prokaryote

   • R. F. Doolittle
   • D. F. Feng
   • M. R. Alberro

   OriginalPaper Pages: 383 - 388

7. Molecular evolution in theDrosophila yakuba period locus

   • Justin R. Thackeray
   • Charalabos P. Kyriacou

   OriginalPaper Pages: 389 - 401

8. Evolution of the autosomal chorion cluster inDrosophila. IV. The HawaiianDrosophila: Rapid protein evolution and constancy in the rate of DNA divergence

   • Juan Carlos Martínez-Cruzado

   OriginalPaper Pages: 402 - 423

9. Molecular characteristics of the heterochromatic I elements from a reactive strain ofDrosophila melanogaster

   • C. Vaury
   • P. Abad
   • A. Bucheton

   OriginalPaper Pages: 424 - 431

10. Phylogenetic position of someChlorella species within the chlorococcales based upon complete small-subunit ribosomal RNA sequences

    • V. A. R. Huss
    • M. L. Sogin

    OriginalPaper Pages: 432 - 442