Proto-oncogenes code for proteins that stimulate cellular growth and division. What happens when these genes fail to regulate the amount of protein produced? A- Cells stop growing and enter the G0 phase of the cell cycle.
B- Cells continue to grow and divide in an uncontrolled manner.
C- Neighboring cells send out chemical signals that start apoptosis.
D- Neighboring cells respond to the proteins and begin uncontrolled growth.