mRNA is created during the process of transcription, where an enzyme (RNA polymerase) converts the gene into primary transcript mRNA (also known as pre-mRNA).
mRNA ຖືກສ້າງຂື້ນໃນລະຫວ່າງຂັ້ນຕອນການ ຖອດລະຫັດ (transcription), ບ່ອນທີ່ມີ enzyme (RNA polymerase) ປ່ຽນ ຍີນ ເຂົ້າ ໃນ ຖອດລະຫັດ mRNA ທີຫນຶ່ງ (ເຊິ່ງເອີ້ນກັນວ່າ pre-mRNA).