PATHOLOGY

Detailed explanation-1: -Nerve cells do not undergo cell division due to absence of centrioles which help in assembling of microtubules during the process of cell division.

Detailed explanation-2: -A certain type of cyclin makes sure all chromosomes are attached to a spindle fiber before entering anaphase. Cells exhibit a characteristic called “contact inhibition.” Cells will grow and divide until they begin to touch other cells. Then cells will slow down their division and will eventually stop reproducing.

Detailed explanation-3: -When a cell comes into contact with another cell, the two cells attempt to change their locomotion in different directions to avoid a repeat of the same in the future. If they cannot avoid it, they cease their growth and division.