The process, by which a cell divides directly producing two daughter cells without following any intermediate stages like mitosis or meiosis, is called amitosis.

Fig: Direct Cell Division (Amitosis)

Process of amitosis:

  1. In this case, the nucleus divides directly into two parts. At first, the nucleus elongates and becomes narrow at the middle and eventually splits into two.
  2. In the meantime, the cell wall at the middle penetrates inwardly making a grove which gradually becomes narrow and ultimately splits into two daughter cells
  3. Later these two newly formed daughter cells grow to be of the size of their mother cells.
  4. In this types of cell division, the disappearance of nuclear membrane and appearance of spindle apparatus do not occur

Example: Bacteria, Yeast etc.