Kind: captions Language: en CRISPR stands for clustered regularly interspaced short palindromic repeats that's why it's just called CRISPR first discovered in bacteria crispers are like bacterial immune systems they have two key parts a destroyer protein like one called cast nine and a piece of RNA that matches viruses that previously infected the bacteria if the same virus were to invade again the RNA wouldn't recognize the invaders DNA attach itself to its old enemy and it's cast partner would slice the virus's DNA destroying it a few years ago some researchers realized they could use CRISPR to edit the genome of any living organism here's the idea save a stretch of DNA may be a part of a gene I'd like to change if I know the sequence of letters there I can build a CRISPR that carries a matching code once inside the cell CRISPR will scan the DNA until it finds that exact spot and when it does it slices the DNA right there now I have a broken gene but it turns out I can insert a new sequence into the gap and that makes CRISPR potentially and extremely powerful to [Music]