Human Genetics

, Volume 66, Issue 2–3, pp 267–271 | Cite as

Complete pachytene chromomere karyotypes of human spermatocyte bivalents

  • J. M. Luciani
  • M. R. Guichaoua
  • M. R. Morazzani
Original Investigations


Well-spread human pachytene spermatocyte bivalents were obtained allowing specific identification of each bivalent within its total complement according to its chromomere sequence combined with further staining of its centromeric heterochromatin. The total number of chromomeres was found to be related to the degree of bivalent contraction: 396 in condensed bivalents and 511 in decondensed bivalents. A striking correspondance between chromomeres and mitotic G-bands was observed; on account of the variability of bivalent contraction, condensed bivalents corresponded to prometaphase somatic chromosomes and decondensed bivalents to mid/late prophase chromosomes.


Internal Medicine Metabolic Disease Specific Identification Somatic Chromosome Pachytene Spermatocyte 
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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • J. M. Luciani
    • 1
  • M. R. Guichaoua
    • 1
  • M. R. Morazzani
    • 1
  1. 1.Department of Embryology and CytogeneticsFaculty of MedicineMarseillesFrance

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