The process of copying DNA into messenger RNA (mRNA) is called transcription. Transcription factors assemble at the promoter region of a gene, bringing an RNA polymerase enzyme to form the transcription initiation complex. Activator proteins at the enhancer region of DNA then activate the transcription initiation complex. RNA polymerase unzips a small portion of the DNA and copies one strand into an mRNA molecule.
AP Biology (2015)
1.B.1.a; 3.A.1.a,b,c; 4.A.1.a,b
IB Biology (2016)
2.1, 2.3, 2.4, 2.6, 2.7, 7.1, 7.2, 7.3
NGSS (April 2013)
HS-LS1-1 (LS1.A), HS-LS4-1 (LS4.A)