During which process does mRNA get synthesized?

The process during which mRNA is synthesized is transcription. In transcription, the DNA sequence of a gene is copied into messenger RNA (mRNA). This occurs in the cell's nucleus and involves the enzyme RNA polymerase, which unwinds the DNA and synthesizes a complementary RNA strand based on the DNA template. This mRNA strand serves as a blueprint for protein synthesis during translation, which is the next step in gene expression, but the actual synthesis of mRNA occurs only in the transcription stage. This distinction is important because it highlights how genetic information is transferred from DNA to an intermediary form (mRNA) before it is ultimately translated into a functional protein.