sentence: Gene regulation switches genes on and off, and so controls cell differentiation, and morphogenesis.
sentences_before: This includes both the transcription and translation stages, and the final folded state of a protein.
sentences_after: The expression of a gene may vary a lot in different tissues. This is called pleiotropism, a widespread phenomenon in genetics.
concept_name: gene regulation
headings: Genetics Genes and development Gene expression
categories: History of science