Ukukopisha Nokuphroseswa kwe-mRNA

Ukukopisha kusho ukudlulisela imininingwane yezakhi zofuzo evela ku-DNA (ama-genes) eya ku-messenger RNA (i-mRNA). Phakathi nokukopisha, i-RNA polymerase inamathela ku-promoter sequence yesakhi sofuzo, "ifunde" i-template DNA strand ibe ifaka ama-nucleotides ku-3' end ye-molecule ekhulayo ye-mRNA, futhi imise i-terminator sequence yesakhi sofuzo. Kuma-eukaryotes, i-pre-mRNA iyaphroseswa ibe yi-mRNA ekhulile ngokwenezela i-5' cap ne-poly-A tail, kanye nokususwa kwama-introns (ngokuhlukanisa).