title: Chromosomal variations in the primate Alouatta seniculus seniculus.
abstract: Chromosome analysis in 23 specimens of Alouatta s. seniculus trapped in different localities of Colombia were examined with the C- and Q-banding techniques. The chromosome numbers (2n=44) showed variations from 2n = 43 to 2n = 45 involving three and five microchromosomes, respectively. Two specimens also showed a structural chromosome variation involving a pericentric inversion of the chromosome No. 13. Chromosome measurements revealed an X chromosome with a value significantly smaller to that established for the standard mammalian X chromosome.
mesh_terms: D000508:Alouatta / Q000033:anatomy & histology*; D000818:Animals; D003105:Colombia; D003582:Cytogenetics; D005260:Female; D014644:Genetic Variation; D000882:Haplorhini / Q000033:anatomy & histology*; D007621:Karyotyping / Q000379:methods; D008297:Male