Given are certain statements regarding the factors that influence drug action. From them identify the incorrect statemen

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Given are certain statements regarding the factors that
influence drug action. From them identify the incorrect
statement(s). 1.Certain drug dosages are calculated based on the
weight of the patient as the patient’s weight influences the drug
action. 2.Psychological states of an individual can influence the
effect of drugs. 3.When two drugs act together, it is known as
potentiation and this can influence the drug effects. 4.The genes
of an individual can affect the drug action.