Answer: Genetic code is the source of gene expression.
Explanation: The genetic code provides the information for the genetic information. The genetic code is the 3 letter code which has information for traits and other things in coded form. The gene expression can be defined as the process by which the coded form of data is decoded. Using the information, synthesis of protein takes place. These functional proteins in the body decides the character of the person. The relation is simple, the genetic code is the source of gene expression.