1. Molecular cloning of DNA

   • Hans-Peter Vosberg

   Review Articles Pages: 1 - 72

2. Origin of acrocentric trisomies in spontaneous abortuses

   • Norio Niikawa
   • Elisabeth Merotto
   • Tadashi Kajii

   Original Investigations Pages: 73 - 78

3. Investigations on the polymorphism of sperm diaphorase in man

   • P. Kühnl
   • U. Langanke
   • M. Neubauer

   Original Investigations Pages: 79 - 86

4. Comparative investigations with Trypaflavin in metaphase-II oocytes and in dominant lethal assay

   • A. Basler
   • M. Brucklacher
   • G. Röhrborn

   Original Investigations Pages: 87 - 92

5. Improved technique for electrophoresis of human galactose-1-P uridyl transferase (EC 2.7.7.12)

   • Maryellen C. Sparkes
   • Michol Crist
   • Robert S. Sparkes

   Original Investigations Pages: 93 - 97

6. Gene diversity in Indian populations

   • A. K. Roychoudhury

   Original Investigations Pages: 99 - 106

7. Parallel occurrence of oxidant-sensitivity and decreased inhibition by NADPH in G-6-PD Lublin and G-6-PD Poznań

   • Andrzej L. Pawlak
   • Danuta Rożynkowa

   Short Communications Pages: 107 - 111

8. Y to X chromosome translocations

   • Digamber S. Borgaonkar

   Letters to the Editors Pages: 113 - 114

9. Announcement

   Announcement Pages: I - I