Final answer:
Tumor suppressor genes are genes that normally slow down or stop cell division. When a mutation occurs, it can lead to uncontrolled cell division, which can result in cancer.
Step-by-step explanation:
Tumor suppressor genes are genes that normally slow down or stop cell division. When a mutation occurs in a tumor suppressor gene, it can no longer control cell division.
This is like a car without brakes.
The car can't be slowed or stopped. In the case of a cell, the cell keeps dividing out of control, which can lead to cancer.