High-resolution chromosome banding studies in Cebus apella,Cebus albifrons,and Lagothrix lagothricha: Comparison with the human karyotype

Karyotypes of three species of South American primates (Cebus apella, Cebus albifrons, and Lagothrix lagothricha) were studied using high-resolution banding techniques, and were compared to the human karyotype. The number of homologies was very high for the three species. Some of the breakpoints implicated in chromosome rearrangements corresponded with human fragile sites. The fragile sites in human chromosomes often correspond with the localization of latent centromeres in the platyrrhines or with large heterochromatic regions that may have been lost or newly added during evolution.