Answer;
-Transcription;
Step-by-step explanation;
-Gene expression involves the process of transcription and that of translation.
-Transcription, which takes place in the nucleus of a cell, involves the synthesis of a messenger RNA (mRNA) from a DNA template. The process is catalyzed by the enyzme RNA polymerase.
-The mRNA synthesiszed from transcription then undergoes the process of translation outside the nucleus (cytoplasm) to form proteins, that may be used for various cellular functions such as regulating cellular reactions.