Karyotype 2n=82, autosomes 80 subtelocentrics and acrocentrics, sex chromosomes X submetacentric, Y acrocentric. Most of the longer autosomes possess a short second arm, but it is difficult to draw a line where subtelocentrics end and acrocentrics begin. Arbitrarily, the first row of 10 pairs can be regarded as subtelocentrics. The karyotype presented here were gifts from Dr P. H?sli, University of Basel, Switzerland.
Skin biopsies were grown from two animals of southern race at San Diego Zoo. Pairing of chromosomes is arbitrary. Karyotype found was 2n=84. Previously this species is reported to have a karyotype of 2n=82, with one less submetacentric pair (Heinichen). 2n= 84. Autosomes: 18 submetacentrics, 64 acrocentrics. Sex chromosomes: X submetacentric, Y acrocentric.
