Pan troglodytes (Chimpanzee)

2n = 48
  • T. C. Hsu
  • Kurt Benirschke


At least 25 animals have now been studied with similar findings, Chiarelli, and Hamerton et al. report minor structural differences for the subspecies P. t. paniscus (pygmy chimpanzee). Satellites occur on the short arms of the acrocentrics. The Y may occasionally be metacentric (Chu and Bender). Quantitative comparisons of the karyotypes of apes have been published by Hamerton et al. The male metaphase is of P. t. troglodytes and was kindly supplied by Dr. H. P. Klinger (New York) and was previously shown as Figs. 3d and 4g by Hamerton et al. The female is from a skin biopsy of P. t. kindly supplied by Dr. H. F. Smetana (New Orleans, Louisiana).


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  1. 1).
    Young, W.Z., Merz, T., Ferguson-Smith, M.A. and Johnston, A.W.: Chromosome number of the chimpanzee, Pan troglodytes. Science 131:1672, 1960.PubMedCrossRefGoogle Scholar
  2. 2).
    Chu, E.H.Y. and Bender, M.A.: Chromosome cytology and evolution in primates. Science 133:1399, 1961.PubMedCrossRefGoogle Scholar
  3. 3).
    Chu, E.H.Y. and Bender, M.A.: Cytogenetics and evolution of primates. Ann. N. Y. Acad. Sci. 102:253, 1962.PubMedCrossRefGoogle Scholar
  4. 4).
    Chiarelli, B.: Comparative morphometric analysis of primate chromosomes. I. The chromosomes of anthropoid apes and of man. Caryologia 15:99, 1962.Google Scholar
  5. 5).
    Hamerton, J.L., Klinger, H.P., Mutton, D.E. and Lang, E.M.: The somatic chromosomes of the Hominoidea. Cytogenetics 2:240, 1963.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag New York Inc. 1967

Authors and Affiliations

  • T. C. Hsu
    • 1
  • Kurt Benirschke
    • 2
  1. 1.Section of Cytology, Department of BiologyThe University of Texas M. D. Anderson Hospital and Tumor InstituteHoustonUSA
  2. 2.Department of PathologyDartmouth Medical SchoolHanoverUSA

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