Exceptions to the central dogma. Of course the Central Dogma is not really a dogma. That is, it is not an article of belief you have to subscribe to in order to be accepted by other biologists. Otherwise reverse transcription would not have been found. The most notable exception to the central dogma is reverse transcription, in which RNA encodes DNA. This process is used by retroviruses and transposons to parasitise the genomes of eukaryotic organisms. Prions are another exception to the central dogma.