Amitosis
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:
- 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.
- 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
- Later these two newly formed daughter cells grow to be of the size of their mother cells.
- In this types of cell division, the disappearance of nuclear membrane and appearance of spindle apparatus do not occur
Example: Bacteria, Yeast etc.