Genetic expression refers to the process by which information from a gene is used to create functional gene products, such as proteins or RNA molecules. This process involves the transcription of DNA into RNA, and the translation of RNA into proteins. Genetic expression is tightly regulated in cells, and can be influenced by various factors such as environmental conditions, cellular signaling pathways, and epigenetic modifications. Understanding genetic expression is important in the study of genetic diseases, developmental biology, and the discovery of new drug targets. Research in genetic expression often focuses on elucidating the mechanisms that control gene expression, identifying key regulatory proteins and pathways, and exploring how alterations in genetic expression can lead to disease.