title: Banded chromosomes of the owl monkey, Aotus trivirgatus.
abstract: Chromosomes of the owl monkey, Aotus trivirgatus, with 2n=54, 53, or 52, have been stained to show quinacrine (Q-) and Giemsa (G-) bands, and a karyotypic arrangement has been proposed based on lengths, centrometric index, and banding pattern. C-bands were present at the centromeric region of every chromosome and over the entire short arm of certain acrocentric chromosomes; 5-methylcytosine was concentrated in the same regions. Bright Q-bands at the telomeric ends of the short arms of some chromosomes probably represent a second type of repetitive DNA. Ag-staining showed that only the chromosomes bearing a secondary constriction are nucleolus organizer chromosomes.
mesh_terms: D000818:Animals; D001399:Azure Stains; D002875:Chromosomes / Q000648:ultrastructure*; D005260:Female; D000882:Haplorhini / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D010641:Phenotype; D011796:Quinacrine
chemical_list: D001399:Azure Stains; D011796:Quinacrine