sodium amytal test: anesthetize one hemisphere and check for language function dichotic listening test: report more digits heard by dominant half functional brain imaging: fMRI or PET used to see which half is active when performing a language test
The process of change by which new species develop from preexisting species over time? The process by which species change over time is evolution. The process by which new species develop from preexisting species over time is evolution.
Species can be classified into genera and families, he says, because species descended from one another, and the existing rules of classification provide patterns that illustrate how this descent occurred.f a particular adaptation in a species appears at a certain time in its development and causes its divergence from the parent species, that adaptation will appear during the developmental stage in its offspring. Darwin notes that this same phenomenon can be observed in the offspring of humans.