730_gene_expression_location_diagram.png | Science News for Students


a graphic showing how gene expression works in a human cell

For gene expression, the cell copies the DNA message to an mRNA molecule (transcription) inside the light-pink region above — the nucleus. Then, the mRNA leaves the nucleus and tRNA molecules read its message to make a protein (translation).

NHS National Genetics and Genomics Education Centre/Wikimedia (CC BY 2.0), adapted by L. Steenblik Hwang