If mitosis skipped any of the stages, it would result in a mutated cell. If the cell skipped Metaphase, it could make daughter cells that are different than the parent cells. If the cell skipped Telophase, the cell would not divide, and the parent cell would attempt interphase with another nucleus.
Explanation:
The cell cycle has two main phases, interphase and mitosis. Mitosis is the process during which one cell divides into two. Interphase is the time during which preparations for mitosis are made.
There are 6 base pair changes between species A and species B. Since we know the rate of change is 1 base pair every 4 million years, we know 6x 4 million is likely how long ago the species diverged. 6x 4 million = 24 million years