1. Random walking

   • Thomas H. Jukes

   BriefCommunication Pages: 313 - 314

2. Polymerization of amino acids containing nucleotide bases

   • Azzouz Ben Cheikh
   • Leslie E. Orgel

   OriginalPaper Pages: 315 - 321

3. Evolution of the mitochondrial genetic code III. Reassignment of CUN codons from leucine to threonine during evolution of yeast mitochondria

   • Syozo Osawa
   • David Collins
   • Kimitsuna Watanabe

   OriginalPaper Pages: 322 - 328

4. Evolution of the mitochondrial genetic code IV. AAA as an asparagine codon in some animal mitochondria

   • Takeshi Ohama
   • Syozo Osawa
   • Thomas H. Jukes

   OriginalPaper Pages: 329 - 332

5. Vertebrate protamine gene evolution I. Sequence alignments and gene structure

   • Rafael Oliva
   • Gordon H. Dixon

   OriginalPaper Pages: 333 - 346

6. Cloning and characterization of thewhite andtopaz eye color genes from the sheep blowflylucilia cuprina

   • Abigail Elizur
   • Ann T. Vacek
   • Antony J. Howells

   OriginalPaper Pages: 347 - 358

7. Isolation and sequence analysis ofCaenorhabditis briggsae repetitive elements related to theCaenorhabditis elegans transposon Tc1

   • Linda J. Harris
   • S. Prasad
   • Ann M. Rose

   OriginalPaper Pages: 359 - 369

8. Amino acid sequences of stomach and nonstomach lysozymes of ruminants

   • Jacqueline Jollès
   • Ellen M. Prager
   • Allan C. Wilson

   OriginalPaper Pages: 370 - 382

9. Comparison of dinucleotide frequency and codon usage inToxoplasma andPlasmodium: Evolutionary implications

   • Alan M. Johnson

   Letter to the Editor Pages: 383 - 387

10. Announcement

    Announcement Pages: 388 - 388