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.
All Answers (4) Speciation in the process that give rise to new species, also named cladogenesis. It occurs via splitting of an ancestral species in two or more new ones, or via merging of two old species into a new one (hybridization or allopolyploidy).