| Evolutionary change of restriction cleavage sites and phylogenetic inference for man and apes | M Nei, F Tajima | 189 |
| Nearly identical allelic distributions of xanthine dehydrogenase in two populations of Drosophila pseudoobscura | TP Keith, LD Brooks, RC Lewontin, JC Martinez-Cruzado, DL Rigby | 206 |
| Gene regulatory divergence among species estimated by altered developmental patterns in interspecific hybrids | HR Parker, DP Philipp, GS Whitt | 217 |
| The adaptation of enzymes to temperature: catalytic characterization of glucosephosphate isomerase homologues isolated from Mytilus edulis and Isognomon alatus, bivalve molluscs inhabiting different thermal environments | JG Hall | 251 |
| Evolution of globin expression in the genus Xenopus (Anura: Pipidae) | E Burki, M Fischberg | 270 |