1. Analytical review enzymatic defects of hereditary porphyrias: An explanation of dominance at the molecular level

   • Giovanni Romeo

   Review Articles Pages: 261 - 276

2. Nullisomy for the distal portion of Xp in a male child with a X/Y translocation

   • L. Tiepolo
   • O. Zuffardi
   • A. Rodewald

   Original Investigations Pages: 277 - 281

3. Women heterozygous for deficiency of the (p21 → pter) region of the X chromosome are fertile

   • M. Fraccaro
   • Paola Maraschio
   • Susi Scappaticci

   Original Investigations Pages: 283 - 291

4. Nonrandom chromsome rearrangements in 27 cases of human myeloid leukemia

   • Danuta Rożynkowa
   • Janina Stępień
   • Andrzej Nowakowski

   Original Investigations Pages: 293 - 301

5. On the population genetics of the red cell glyoxalase I (GLO)

   • P. Stöhlmacher
   • W. Haferland

   Original Investigations Pages: 303 - 304

6. Duffy blood group and hemoglobin variants

   • T. Reed
   • P. M. Conneally

   Original Investigations Pages: 305 - 307

7. Inhibition of the development of Q-bands on human chromosomes by netropsin

   • Joseph Schlammadinger
   • Hanne Poulsen
   • Margareta Mikkelsen

   Original Investigations Pages: 309 - 313

8. Characterization of residual hexosaminidase activity in Sandhoff's disease using man-Chinese hamster cell hybrids

   • H. L. Hoeksema
   • A. J. J. Reuser
   • H. Galjaard

   Original Investigations Pages: 315 - 319

9. Studies on steroid hormone refeptors (5 α=dihidrotestosterone, estradiol, and dexamethasone) in cultured human fibroblasts and amniotic fluid cells

   • Thomas Bauknecht

   Original Investigations Pages: 321 - 328

10. Total aneuploidy and age-related sex chromosome aneuploidy in cultured lymphocytes of normal men and women

    • Peter H. Fitzgerald
    • Christine M. McEwan

    Original Investigations Pages: 329 - 337

11. Direct assignment of citrate synthase (CS) gene to human chromosome 12 in man-mouse somatic cell hybrids

    • Lucie M. M. Wijnen
    • K. -H. Grezeschik
    • P. Meera Khan

    Original Investigations Pages: 339 - 344

12. Effect of nitrofurantoin on meiosis of the male mouse

    • Christa Fonatsch

    Original Investigations Pages: 345 - 351

13. ‘Gd(-) Hôtel Dieu’: A new G-6PD variant with chronic hemolysis in a Negro patient from Senegal

    • Axel Kahn
    • Christian Dao
    • Georges Bilski-Pasquier

    Short Communications Pages: 353 - 357

14. The effect of cyclophosphamide on the centromere separation sequence in Chinese hamster spermatogonia

    • Jai Rup Singh
    • Herbert G. Miltenburger

    Short Communications Pages: 359 - 362