Beta cells in the pancreas and human skin cells
both contain the insulin gene. the beta cells can
make insulin; however, skin cells cannot. which
process is responsible for this gene being
expressed in one cell type and not in another
cell type?
(1) mitosis (3) differentiation
(2) replication (4) meiosis

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.