Mitosis is when the cell divides
The answer is : Individuals
The drug side effect is the result from the interaction from the substance contained by the drugs and the environment in our body.
Which means that the effect will be very much influenced by the individual's age, wage, height, gender, diet, metabolism, muscle mass, etc.
A single gene could be inserted into a plant's genome, enabling specific traits to be expressed easily. Scientists have identified genes for two enzymes needed to make pro-vitamin A. One of these genes comes from corn.