If they were to be no separation <span>of a pair of chromosomes during meiosis resulting in formation of a sperm or ovum with 24 chromosomes instead of 23.</span>
Answer: The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
Explanation: