| Mitochondrial DNA phylogeny of the Old-World monkey tribe Papionini | TR Disotell, RL Honeycutt, M Ruvolo | 1 |
| Exon-specific gene correction (conversion) during short evolutionary periods: homogenization in a two-gene family encoding the beta-chain constant region of the T-lymphocyte antigen receptor | S Rudikoff, WM Fitch, M Heller | 14 |
| Nucleotide sequence variation in the mitochondrial 12S rRNA gene and the phylogeny of African mole-rats (Rodentia: Bathyergidae) | MW Allard, RL Honeycutt | 27 |
| A new 5' sequence associated with mouse L1 elements is representative of a major class of L1 termini | V Jubier-Maurin, G Cuny, AM Laurent, L Paquereau, G Roizes | 41 |
| Nucleotide polymorphism at the xanthine dehydrogenase locus in Drosophila pseudoobscura | MA Riley, SR Kaplan, M Veuille | 56 |
| Phylogenetic relationships and unusual diversity in histone H4 proteins within the Tetrahymena pyriformis complex | LA Sadler, CF Brunk | 70 |
| Molecular phylogeny of the volvocine flagellates | A Larson, MM Kirk, DL Kirk | 85 |
| Repeated sequences and large-scale size variation of mitochondrial DNA: a common feature among scallops (Bivalvia: Pectinidae) | B Gjetvaj, DI Cook, E Zouros | 106 |
| Five major nuclear ribosomal repeats represent a large and variable fraction of the genomic DNA of Picea rubens and P. mariana | MS Bobola, DE Smith, AS Klein | 125 |
| A statistical test for detecting geographic subdivision | RR Hudson, DD Boos, NL Kaplan | 138 |
| Significant similarity and dissimilarity in homologous proteins | S Karlin, V Brendel, P Bucher | 152 |
| Statistical method for estimating the standard errors of branch lengths in a phylogenetic tree reconstructed without assuming equal rates of nucleotide substitution among different lineages | F Tajima | 168 |
| Book reviews | J Cracraft, M Kreitman | 182 |
| Announcements | | 190 |
