Recording from single neurons in the brain has shown that neurons responding to specific types of stimuli are often clustered in specific areas. these results support the idea of:

Recording from single neurons in the brain has shown that neurons responding to specific types of stimuli are often clustered in specific areas. These results support the idea of localization of function.

Localization of function is an idea used in neuroscience. It refers to the idea that functions can be attributed to specific regions of the brain (different brain areas are specialized for different functions).

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".