Abstract
The diploid number of chromosomes is fortyfour in P. entellus entellus with XX female and XY male. The X chromosome appears to be slightly heteromorphic. On arranging the chromosomes according to size and centromeric position the autosomes fall into four groups. There are twevle pairs with centromeres in the median region (m), and seven pairs with centromeres in the submedian region (sm). The remaining two groups are represented by one pair in each with centromeres in subterminal (st) and terminal (t) regions. The X chromosome is of medium size with centromere in the median region (m) and the Y is the smallest in the complement with centromere in the terminal region (t). In one of the pairs of small chromosomes (m) a conspicuous achromatic region is seen near the centromere.Attempt has been made to comment on the classification of primates basing on the similarity in the karyotypes of Presbytis and Hylobates.kn-abstract=
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