1. An H1 histone gene from rainbow trout (Salmo gairdnerii)

   • J. Mezquita
   • W. Connor
   • G. H. Dixon

   OriginalPaper Pages: 209 - 219

2. Pattern of nucleotide substitution and the extent of purifying selection in retroviruses

   • Dan Graur

   OriginalPaper Pages: 221 - 231

3. An estimate on the effect of point mutation and natural selection on the rate of amino acid replacement in proteins

   • C. Frömmel
   • H. -G. Holzhütter

   OriginalPaper Pages: 233 - 257

4. Comparison of the nucleotide sequence of soybean 18S rRNA with the sequences of other small-subunit rRNAs

   • Virginia K. Eckenrode
   • Jonathan Arnold
   • Richard B. Meagher

   OriginalPaper Pages: 259 - 269

5. Primeval cells: Possible energy-generating and cell-division mechanisms

   • Arthur L. Koch

   OriginalPaper Pages: 270 - 277

6. Markov chain analysis finds a significant influence of neighboring bases on the occurrence of a base in eucaryotic nuclear DNA sequences both protein-coding and noncoding

   • B. Edwin Blaisdell

   OriginalPaper Pages: 278 - 288

7. The geological setting of the earliest life forms

   • E. G. Nisbet

   OriginalPaper Pages: 289 - 298

8. Template-directed polynucleotide synthesis on mineral surfaces

   • Alan W. Schwartz
   • Leslie E. Orgel

   Letter to the Editor Pages: 299 - 300

9. Recently published papers in the field of molecular evolution

   • L. Träger

   Legacy Pages: 301 - 304