What evolutionary event set humans on a different path than apes?

when the first homeosapien stood on two legs and walked the earth

Explanation:

history of evolution has always stated that the event was when "we" stood on the earth

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive