So let's suppose that this process takes place normally. And so what that means is these will segregate, will move to opposite poles, and after meiosis one takes place, we form these two haploid cells, as shown. So haploid cell number one and haploid cell number two. Now, let's assume nondisjunction takes place. And let's say that nondisjunction takes place within this cell. So what happens is this centriole basically fails to extend the fiber, and that bonding between the fiber and this particular cystochromatid failed to actually take place.