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.
When a species undergoes an evolutionary change that leads to the creation of a new species, it is called speciation. Speciation has given rise to the diversity of species present on Earth. We discussed that for speciation to occur, individuals of a population need to be reproductively isolated from one and another.