Final answer:
Necrotic neuronal cell death is not a typical mechanism of neurodevelopment; it is an uncontrolled process unlike the programmed nature of apoptosis.
Step-by-step explanation:
The mechanisms of neurodevelopment typically include synaptic pruning, synaptogenesis, and apoptotic neuronal cell death. Synaptogenesis is the formation of synapses between neurons in the nervous system, whereas synaptic pruning is the process of eliminating extra synapses. Apoptotic neuronal cell death is a programmed process of cell death necessary for the development and maintenance of the nervous system. However, necrotic neuronal cell death is not a typical mechanism of neurodevelopment as it refers to an accidental, uncontrolled process of cell death, often occurring from external injury or trauma, unlike apoptosis which is a controlled, natural part of neurodevelopment. Necrosis leads to inflammation and damages neighboring cells and tissues, which is typically unwanted during the development process.