Final answer:
The major embryological grouping of the brain consists of the forebrain, midbrain, and hindbrain, which develop from the neural tube. These structures give rise to the cerebrum, mesencephalon, metencephalon, and myelencephalon, forming the basis of the fully developed adult brain.
Step-by-step explanation:
The major embryological grouping of the brain includes the forebrain, midbrain, and hindbrain. These structures develop from the neural tube and form the basis of the fully developed adult brain. The forebrain gives rise to the cerebrum, the midbrain forms the mesencephalon, and the hindbrain develops into the metencephalon and myelencephalon, which become the brainstem and cerebellum, respectively.