title: Chromosomes of the tan-handed titi (Callicebus torquatus, Hoffmannsegg, 1807).
abstract: Two new specimens of Calicebus torquatus confirm the previously reported unusually low diploid number of 2n = 20. Banding studies and radioautography identify the X chromosome and compare the karyotype with that of Callicebus moloch cupreus. The latter species has considerably less C-banded heterochromatin. A comparison of Giemsa bands establishes only few comparable chromosome segments.
mesh_terms: D000818:Animals; D002875:Chromosomes; D005260:Female; D000882:Haplorhini; D006570:Heterochromatin; D008214:Lymphocytes / Q000166:cytology; D012730:Sex Chromosomes; D012867:Skin / Q000166:cytology
chemical_list: D006570:Heterochromatin