During development, 50% of neurons die; those that survive are those that

Around 50% of neurons die because they have not receive life-sustaining signal from the postsynaptic cell that is crucial to survive. These neurons die by apoptosis where biochemical events lead to cell changes and programmed cell death. Those neurons that survive during development find appropriate synaptic connections with other postsynaptic cells and those neurons were produce by ventricular zone of the brain who is capable of providing surplus of neurons.

 

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water

The casefor proofs