Because different genes are switched on and off in each type of cell.
The parietal lobe contains the primary sensory cortex, which controls sensations such as touch or pressure.
Your answer is going to be Hydrolysis
Answer: D.
Explanation: Members of the same species do not have the same number of cells. Think differences in height or weight. They do not have identical traits. Think siblings. They cannot create different species. Two wolves cannot make a coyote.