A gene product is a molecule produced by the expression of a gene. Some common synonyms for gene product include protein, enzyme, RNA, polypeptide, and mRNA. Proteins are often referred to as the primary gene product, as they perform crucial roles in cellular processes and form the building blocks for many complex structures within the body. Enzymes are a type of protein that catalyze chemical reactions within the body, while RNA and mRNA are involved in the process of gene expression. Polypeptides are chains of amino acids that can be synthesized from mRNA during protein synthesis. These various synonyms can be used interchangeably to describe the products of gene expression.