Yes ,it\'s true. Though both gibbons and rhesus monkeys belong to primates, but gibbons are under a group apes, and rhesus monkeys belongs to old world monkey group. Apes are near common ancestor of homosapiens. Solution Yes ,it\'s true. Though both gibbons and rhesus monkeys belong to primates, but gibbons are under a group apes, and rhesus monkeys belongs to old world monkey group. Apes are near common ancestor of homosapiens..