基因产物是基因表达的产物，是一种生物化学物质，通常是RNA或蛋白质。基因产物的数量用于衡量基因的活跃程度。基因产物的数量异常可能是由某些致病性的等位基因 引起，例如过度活跃的癌基因会导致癌症。

A gene product is the biochemical material, either RNA or protein, resulting from expression of a gene. A measurement of the amount of gene product is sometimes used to infer how active a gene is. Abnormal amounts of gene product can be correlated with disease-causing alleles, such as the overactivity of oncogenes which can cause cancer. A gene is defined as "a hereditary unit of DNA that is required to produce a functional product". Regulatory elements include: