Toque macaque Toque macaque The toque macaque ("Macaca sinica") is a reddish-brown-coloured Old World monkey endemic to Sri Lanka, where it is known as the "rilewa" or "rilawa" (Sinhala රිළවා), (hence "rillow" in the "Oxford English Dictionary"). With age, the face of females turn slightly pink, prominent in the subsp. "sinica". "M. s. sinica" is found from the Vavuniya, Mannar, up to the lowlands of Anuradhapura, Polonnaruwa, Puttalam, and Kurunegala along the arid zone of Monaragala, and Hambantota districts. "M. s. aurifrons" can be found sympatrically with subsp. "sinica" within intermediate regions of the country, such as Kegalle, parts of Kurunegala. They
Rhesus macaque The X chromosome has three times more rearrangements than other chromosomes. The macaque gained 1,358 genes by duplication. Triangulation of human, chimpanzee, and macaque sequences showed expansion of gene families in each species. The "PKFP" gene, important in sugar (fructose) metabolism, is expanded in macaques, possibly because of their high-fruit diet. So are genes for the olfactory receptor, cytochrome P450 (which degrades toxins), and CCL3L1-CCL4 (associated in humans with HIV susceptibility). Immune genes are expanded in macaques, relative to all four great ape species. The macaque genome has 33 major histocompatibility genes, three times those of human. This has clinical