And once that segment actually breaks off, it can do one of four different things. We can either have an inversion take place, we can have a deletion, we can have a duplication or translocation. So let's discuss what these actually mean. And let's begin by looking at inversion. So let's suppose this is our normal chromosome and this is a specific segment of the DNA that is about to break off. So let's suppose this chromosome is exposed to some type of radiation, for example, X ray radiation.