An oncology class is reviewing the cell cycle as it pertains to tumor growth. when talking about the m phase, which process will occuring at this time?

M phase or Mitosis:

During the M phase or mitosis of the cell cycle, division of the cell occurs. And the number of the cells increase in number.

Explanation:

There are some regulatory proteins present at the cell cycle checkpoints, which can leads to mutation inside the cell basic structure. As it causes the basic structure of the cell to cause uncontrolled level of cell division inside the human body, forming a tumor in a certain organ or at any place inside  the body.