1. Unstable ring Y chromosome in an aspermic male

   • P. Steinbach
   • H. Fabry
   • W. Scholz

   Original Investigations Pages: 227 - 231

2. Monosomy 10 qter

   • Catherine Turleau
   • J. de Grouchy
   • D. Bouygues

   Original Investigations Pages: 233 - 237

3. Partial trisomy of the short arm of chromosome 3 (3p25→3pter)

   • C. Parloir
   • J. P. Fryns
   • H. Van den Berghe

   Original Investigations Pages: 239 - 244

4. Partial trisomy 4q: Two cases with a familial translocation t(4;18)(q27;q23)

   • Mario Stella
   • Aldo Bonfante
   • Giovanni Rossi

   Original Investigations Pages: 245 - 251

5. Two cases of trisomy 12p due to rcpt(12;21)(p11;p11) inherited through three generations

   • M. Parslow
   • Diana Chambers
   • W. Hunter

   Original Investigations Pages: 253 - 260

6. Two cases of familial paracentric inversion in man associated with sex chromosome anomaly

   • Nina Canki
   • B. Dutrillaux

   Original Investigations Pages: 261 - 268

7. XY gonadal dysgenesis and the H-Y antigen

   • Ulrich Wolf

   Original Investigations Pages: 269 - 277

8. Characterisation of the isoenzymes of phosphoglucomutase (PGM) determined by the first (PGM₁) and second (PGM₂) locus observed by isoelectric focusing

   • J. G. Sutton

   Original Investigations Pages: 279 - 290

9. Combination of differential sister chromatid staining, G-banding pattern, and X-inactivation pattern

   • Joe-jie Hoo
   • M. I. Parslow
   • Diana Chambers

   Original Investigations Pages: 291 - 295

10. The likely region of overlap (LRO) method for physical assignment of loci

    • W. R. Williams
    • N. E. Morton
    • S. Yee

    Original Investigations Pages: 297 - 304

11. Chromatographic components of β-hexosaminidase in I-cell disease (Mucolipidosis II)

    • A. F. Van Elsen
    • J. G. Leroy

    Original Investigations Pages: 305 - 317

12. An automatic system for chromosomal analysis applied to prenatal diagnosis

    • C. Léonard
    • P. Saint-Jean
    • R. Le Go

    Original Investigations Pages: 319 - 327

13. Correlated inhibition of ribosomal RNA synthesis and silver staining by actinomycin D

    • F. J. Hofgärtner
    • W. Krone
    • Kamlesh Jain

    Original Investigations Pages: 329 - 333

14. C′3 polymorphism in Italy

    • Renato Scacchi
    • Rosa Maria Corbo
    • Ricciotti Palmarino

    Original Investigations Pages: 335 - 337

15. Electrophoretic demonstration of heterozygosis in hereditary pyruvate kinase deficiency

    • A. Kahn
    • Joelle Marie
    • J. L. Vives-Corrons

    Short Communication Pages: 339 - 342

16. Is it G banding sufficient for the localization of breakpoints in translocations?

    • F. Prieto
    • L. Badia
    • F. Asensi

    Letters to the Editors Pages: 343 - 344

17. Autosomal dominant acrodysostosis

    • J. M. Cantú
    • A. Hernández
    • Z. Nazará-Cazorla

    Letters to the Editors Pages: 345 - 346

18. European Society of Human Genetics the Wessex Symposium Southampton, 19–21 July 1979

    • M. Seabright

    Note Pages: 347 - 347