​What is Pathology - A typical cell cycle has how many phases?

​What is Pathology - A typical cell cycle has how many phases?
​The cell cycle is divided into four stages: 
G1 (presynthetic gap), S (synthetic phase), 
G2 (postsynthetic gap), and M (mature phase) (mitotic phase).
The majority of mitotic cells are nondividing and so in phase G0. Cyclins designated A through E, as well as cyclin-dependent kinases, control the entry into the mitotic cycle and the progression of the cell cycle from one phase to the next. The mitotic cycle can be stopped by particular inhibitors for each of these kinases.