Restriction Enzyme

Reverse transcriptase is an enzyme produced by some viruses (retroviruses, which store their genetic information as RNA instead of DNA), which, as the name implies, reverses the normal process of transcription. It facilitates the synthesis of DNA from an RNA template. It has found great application in molecular biology labs, because it allows specific genes to be easily isolated, using mRNA, then inserted into a specific DNA genome, by reverse transcribing the RNA. The DNA resulting from this process is called cDNA (copy DNA) and is much more stable than mRNA.