1. Random walking

   • Thomas H. Jukes

   BriefCommunication Pages: 1 - 2

2. Genome structure and evolution

   • Giorgio Bernardi

   EditorialNotes Pages: 3 - 3

3. Elements in microbial evolution

   • Werner Arber

   OriginalPaper Pages: 4 - 12

4. Molecular evolution of bacteriophages: Discrete patterns of codon usage in T4 genes are related to the time of gene expression

   • Elizabeth Cowe
   • Paul M. Sharp

   OriginalPaper Pages: 13 - 22

5. Determinants of DNA sequence divergence betweenEscherichia coli andSalmonella typhimurium: Codon usage, map position, and concerted evolution

   • Paul M. Sharp

   OriginalPaper Pages: 23 - 33

6. Multigene families and the evolution of complexity

   • Tomoko Ohta

   OriginalPaper Pages: 34 - 41

7. On the mode of evolution of alpha satellite DNA in human populations

   • B. Marçais
   • J. P. Charlieu
   • G. Roizès

   OriginalPaper Pages: 42 - 48

8. Free left arms as precursor molecules in the evolution of Alu sequences

   • Jerzy Jurka
   • Emile Zuckerkandl

   OriginalPaper Pages: 49 - 56

9. Compositional properties of nuclear genes from cold-blooded vertebrates

   • Giacomo Bernardi
   • Giorgio Bernardi

   OriginalPaper Pages: 57 - 67

10. Genome variations in the transition from amphibians to reptiles

    • Ettore Olmo

    OriginalPaper Pages: 68 - 75

11. Chondrichthyan cytogenetics: A comparison with teleosteans

    • Vincenzo Stingo
    • Lucia Rocco

    OriginalPaper Pages: 76 - 82

12. The main regulatory region of mammalian mitochondrial DNA: Structure-function model and evolutionary pattern

    • Cecilia Saccone
    • Graziano Pesole
    • Elisabetta Sbisá

    OriginalPaper Pages: 83 - 91

13. Mitochondrial DNA evolution in lagomorphs: Origin of systematic heteroplasmy and organization of diversity in European rabbits

    • Christophe Biju-Duval
    • Hajer Ennafaa
    • Jean-Claude Mounolou

    OriginalPaper Pages: 92 - 102