1. Micro-spatial population differentiation in activity of glycerol-3-phosphate oxidase (GPO) from mitochondria of Drosophila melanogaster

   • J. L. Ross
   • S. W. McKechnie

   Research Articles Pages: 145 - 154

2. Parallel polymorphisms for supernumerary heterochromatin in Dichroplus elongatus (Orthoptera):

   • M. A. Loray
   • M. I. Remis
   • J. C. Vilardi

   Research Articles Pages: 155 - 163

3. Genetic and environmental factors in the resistance of Drosophila subobscura adults to high temperature shock

   • A. Quintana
   • A. Prevosti

   Research Articles Pages: 165 - 170

4. Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies

   • P. M. Mirol
   • C. J. Bidau

   Research Articles Pages: 171 - 178

5. Ultrastructure, meiotic behavior, and evolution of sex chromosomes of the genus Ellobius

   • O. L. Kolomiets
   • N. N. Vorontsov
   • T. F. Mazurova

   Research Articles Pages: 179 - 189

6. Time-dependent AluI action on human chromosomes

   • A. Ma. Fernández-Peralta
   • I. Tagarro
   • J. J. González-Aguilera

   Research Articles Pages: 191 - 194

7. Plasmid macro-evolution: selection of deletions during adaptation in a nutrient-limited environment

   • R. I. Modi
   • C. M. Wilke
   • J. Adams

   Research Articles Pages: 195 - 202

8. Physical mapping of the Esterase-6 locus of Drosophila melanogaster

   • W. S. Procunier
   • J. J. Smith
   • R. C. Richmond

   Research Articles Pages: 203 - 208

9. ZZW autotriploidy in a Blue-and-Yellow Macaw

   • T. R. Tiersch
   • M. L. Beck
   • M. Douglass

   Research Articles Pages: 209 - 212

10. Why the evolution of resistance to anthropogenic toxins normally involves major gene changes: the limits to natural selection

    • M. R. Macnair

    Research Articles Pages: 213 - 219