1. Pachytene chromosomes in male and female mice heterozygous for the Is(7;1)40H insertion

   • Shantha Mahadevaiah
   • Ursula Mittwoch
   • M. J. Moses

   OriginalPaper Pages: 163 - 169

2. Chromosome number variation within Philaethria butterflies (Lepidoptera: Nymphalidae, Heliconiini)

   • Esko Suomalainen
   • Keith S. Brown Jr.

   OriginalPaper Pages: 170 - 176

3. Electron microscopic map of divisions 61, 62, and 63 of the salivary gland 3L chromosome in Drosophila melanogaster

   • Veikko Sorsa
   • Anja O. Saura
   • Tapio I. Heino

   OriginalPaper Pages: 177 - 184

4. Transformation of the Hprt gene with DNA from spermatogenic cells

   • L. Venolia
   • D. W. Cooper
   • S. M. Gartler

   OriginalPaper Pages: 185 - 189

5. A phylogenetic study of sex determiner location in a group of Australasian Chironomus species (Diptera, Chironomidae)

   • Jon Martin
   • B. T. O. Lee

   OriginalPaper Pages: 190 - 197

6. Heat-shock phenomena in Chironomus tentans

   • Markus Lezzi

   OriginalPaper Pages: 198 - 203

7. Heat-shock phenomena in Chironomus tentans

   • Markus Lezzi
   • Friederike Gatzka
   • Barbara Meyer

   OriginalPaper Pages: 204 - 210

8. Chromosomal transplantation

   • James F. Moruzzi
   • Mark S. Ellinger

   OriginalPaper Pages: 211 - 221

9. Bivalent behavior in Drosophila melanogaster males containing the In(1)sc ^4Lsc^8RX chromosome

   • Jeffrey G. Ault
   • Hsiu-Ping P. Lin

   OriginalPaper Pages: 222 - 228

10. Chromosome relationships in the genus Salmo

    • S. E. Hartley
    • M. T. Horne

    OriginalPaper Pages: 229 - 237