Long periods of species stability that is interrupted by periods of rapid change is what type of evolution?

The cell cycle has two main phases which is marked pink. These are called the interphase and m-phase. The interphase has three key stages which are gap 1, s phase and gap 2. S phase will be marked with blue because it is an important phase wherein DNA replication occurs. And the M-phase is where the cell itself divides with an equal amount of chromosomes and a new daughter cell is generated.