ocr: Evolution4 swath of evolution. Shared features of primate evolution (in lemurs, lorises, tarsiers, monkeys, and apes) include increasing dominance of vision over smell; the development of grasping and manipulative hands; increasing complexity of the brain and its enlargement relative to body size; emphasis on mobility in the design of the joints of the forelimb; the ability to hold the trunk of 1 the body upright and to walk on two legs when neces- sary; and complex forms of social 3 8