1. DNA-puffing patterns in the salivary glands of Trichosia pubescens (Diptera-Sciaridae)

   • J. M. Amabis

   OriginalPaper Pages: 3 - 13

2. The population genetics of reinforcing selection

   • A. A. Harper
   • D. M. Lambert

   OriginalPaper Pages: 15 - 23

3. Arginine-rich nucleoprotein transition occurs in the two size classes of spermatozoa of Drosophila subobscura males

   • E. Hauschteck-Jungen
   • G. Rutz

   OriginalPaper Pages: 25 - 32

4. The use of telotrisomics for centromere mapping in Arabidopsis thaliana (L.) Heynh.

   • M. Koornneef

   OriginalPaper Pages: 33 - 40

5. The chromosome system in three species of the genus Arcyptera II. Unstable B-chromosomes in A. fusca (Pall.)

   • C. López-Fernández
   • J. Gosálvez

   OriginalPaper Pages: 41 - 46

6. The metaphase banding pattern produced in the chromosomes of Culiseta longiareolata (Diptera: Culicidae) by AluI restriction endonuclease or actinomycin-D treatment followed by acridine-orange staining

   • R. Mezzanotte
   • L. Ferrucci

   OriginalPaper Pages: 47 - 50

7. A practical method of chromosome classification on the basis of centromere position

   • C. A. Naranjo
   • L. Poggio
   • P. E. Brandham

   OriginalPaper Pages: 51 - 53

8. Chromosomal abnormalities in males-producing eggs: a study in Megoura viciae (Homoptera, Aphididae)

   • E. Orlando

   OriginalPaper Pages: 55 - 59

9. Cytological studies on three species of neotropical cassidines (Coleoptera, Chrysomelidae)

   • F. Panzera
   • M. C. Mazzella
   • E. S. De Vaio

   OriginalPaper Pages: 61 - 68

10. Fréquences géniques chez le chat domestique, Felis catus, dans quatre communes rurales françaises

    • D. Pontier

    OriginalPaper Pages: 69 - 73

11. Genetic differentiation between populations of Pomatoschistus minutus from the Bristol Channel and the Adriatic

    • G. P. Wallis
    • J. A. Beardmore

    OriginalPaper Pages: 75 - 80