Density and frequency-dependent selection on the singed locus of Drosophila melanogaster Gonzalo AlvarezJosé FariñaAntonio Fontdevila OriginalPaper Pages: 161 - 166
Cyclical selection in a subdivided population with negative assortative mating with respect to the niche of origin. Differential selection between males and females as a special case R. F. Hoekstra OriginalPaper Pages: 167 - 171
The alcohol dehydrogenase locus affects meiotic crossing-over in Drosophila melanogaster G. KiliasS. N. AlahiotisA. Onoufriou OriginalPaper Pages: 173 - 177
New developments in vertebrate cytotaxonomy I. cytotaxonomy of the amphibians Alessandro Morescalchi OriginalPaper Pages: 179 - 193
Denombrement et analyse morphologique des chromosomes chez quelques clones issus d'une souche anergiee de tabac: Relation avec l'anergie, le pouvoir tumoral et l'organogenese A. MourasA. Lutz OriginalPaper Pages: 195 - 199
Adh system and genetic background: Interaction with wing length in Drosophila melanogaster Elisa PieragostiniSimonetta SangiorgiSandro Cavicchi OriginalPaper Pages: 201 - 206
Allozyme variation in natural populations of Drosophila subobscura along a North-South gradient W. PinskerD. Sperlich OriginalPaper Pages: 207 - 219
Sparse distribution of constitutive heterochromatin and its variation in two species of mongooses (Carnivora) with exact G-band homology S. SenT. Sharma OriginalPaper Pages: 221 - 226
New developments in vertebrate cytotaxonomy II. the chromosomes of the cartilaginous fishes Vincenzo Stingo OriginalPaper Pages: 227 - 239