| On the origins of esterases | M Myers, RC Richmond, JG Oakeshott | 113 |
| Phylogenetic distribution in the genus Mus of t-complex-specific DNA and protein markers: inferences on the origin of t-haplotypes | C Delarbre, Y Kashi, P Boursot, JS Beckmann, P Kourilsky | 120 |
| Structural organization of the beta-globin locus of B-haplotype sheep | KJ Garner, JB Lingrel | 134 |
| Avoidance of base runs in switch regions of immune-system genes | P Perrin, R Grantham | 141 |
| Organization and evolution of the alcohol dehydrogenase gene in Drosophila | VH Cohn, GP Moore | 154 |
| Low genic variation in male-reproductive-tract proteins of Drosophila melanogaster and D. simulans | MB Coulthart, RS Singh | 167 |
| High level of divergence of male-reproductive-tract proteins, between Drosophila melanogaster and its sibling species, D. simulans | MB Coulthart, RS Singh | 182 |
| High codon-usage changes in mammalian genes | D Mouchiroud, C Gautier | 192 |
| Book reviews | GS Whitt, M Tracey, Jr. | 197 |
| Errata | | 199 |
