Identical giemsa banding patterns of two macaca species: Macaca mulatta and M. fascicularis. A densitometric study.

Karyotypes of Macaca mulatta and M. fascicularis (2n equals 42) were compared using the Giemsa banding pattern technique. No differences between the chromosomes of both Macaca species were found with conventional staining methods. In the literature the occurrence of fertile hybrids is used as an argument in favor of conspecificity. The banding patterns were evaluated by comparison of their density distribution curves. Our data indicated no significant differences between the two Macaca species.