Abstract
The male karyotype came from a skin biopsy kindly supplied by Dr. C. Gray, National Zoological Park, Washington, D. C, USA; that of the female was from a skin biopsy supplied by Dr. R. Hunt, New England Regional Primate Research Center, Southborough, Massachusetts, USA. Dr. Hunt supplied three other specimens including one male which has 2n=50/51, similar to that described by Chiarelli and Barberis. Thus, polymorphism presumably exists in this species. The biarmed elements are here placed in the first two rows. Some acrocentrics also have very small short arms. The metacentric marker autosome pair with its pronounced secondary constriction is placed before the sex chromosomes. It is also present in the karyotype with 2n=50. In most karyotypes the very small Y appears to be metacentric.
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References
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Hsu, T.C., Benirschke, K. (1971). Aotus trivirgatus (Owl monkey). In: An Atlas of Mammalian Chromosomes. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-9824-3_48
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DOI: https://doi.org/10.1007/978-1-4612-9824-3_48
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