DNA transcription

DNA transcription is the process by which a cell converts a specific segment of DNA into messenger RNA (mRNA). This happens in the nucleus, where the enzyme RNA polymerase unzips a small portion of the DNA double helix. It then reads the DNA sequence and synthesizes a complementary strand of mRNA. This mRNA serves as a portable copy of the genetic instructions, which can leave the nucleus and be used in protein production. In essence, transcription translates the DNA code into a format that can be used to build proteins, which are essential for cell function.