Question

why doesnt nerve cells divide ?

Answer 1

It seems evolutionarily beneficial for neurons to divide and multiply which would boost intelligence when needed. Of course animals with minimal brain requirement might not benefit from nerves dividing but why couldn't mammals have it? Has there not been enough time to evolve dividing nerves or is it genetically not possible.

Answer 2

Answer:

But in nerve cells, some of these granules remain scattered in the cytoplasm outside the nucleus. As they are found outside the nucleus, they cannot form the centrosome and as such no spindle fibres. Hence, unlike most animal cells, nerve cells or neurones, as they are otherwise known, generally don''t divide.