This very cool animation goes into everything you wanted to know (or didn’t want to until you saw this) about RNA interference, or RNAi. Eukaryotic cells (those, like ours, with a nucleus) do a lot of different things to regulate how genes are expressed. One regulatory method is to silence the protein production of genes using small bits of RNA (hence the name, RNA interference). RNAi can act like a wrench thrown into the works, literally stopping gene production from DNA. It was first examined as a drug itself, but most of those attempts have not worked out. RNAi has shown us, however, how genes can be regulated–and that knowledge can lead to new treatments for disease.
The information here is pretty involved, but the animation is awesome, so it’s worth watching a few times!