| Origin and evolution of organisms as deduced from 5S ribosomal RNA sequences | H Hori, S Osawa | 445 |
| Molecular evidence for the rapid propagation of mouse t haplotypes from a single, recent, ancestral chromosome | LM Silver, M Hammer, H Fox, J Garrels, M Bucan | 473 |
| Evolutionary expansion of Mhc class I loci in the mole-rat, Spalax ehrenbergi | V Vincek, D Nizetic, M Golubic, F Figueroa, E Nevo | 483 |
| Gene conversions in the horse alpha-globin gene complex | JB Clegg | 492 |
| Molecular evolution of mammalian class I alcohol dehydrogenase | S Yokoyama, R Yokoyama | 504 |
| Mode of inheritance and variation of mitochondrial DNA in hybridogenetic fishes of the genus Poeciliopsis | JC Avise, RC Vrijenhoek | 514 |
| Systematics and mitochondrial genome evolution of Australian Rosellas (Aves: Platycercidae) | JR Ovenden, AG Mackinlay, RH Crozier | 526 |
| Structural relatedness of lysis proteins from colicinogenic plasmids and icosahedral coliphages | PC Lau, MA Hefford, P Klein | 544 |
| Book review | D Hewett-Emmett | 557 |
