Chromosome Complements of Two Species of Primates: Cynopithecus niger and Presbytis entellus

Science  02 Oct 1964:
Vol. 146, Issue 3640, pp. 78-79
DOI: 10.1126/science.146.3640.78


Forty-two chromosomes were counted from expanded cultured cells of four Celebes apes, Cynopithecus niger. Mitotic cells from three Indian langurs, Presbytis entellus, contained 44 chromosomes. These counts support cytogenetically the taxonomical classification of these animals according to Simpson.