So we have metaphase two. Now, this cell basically divides normally and so these fibers are able to attach to each one of these cystochromatids. So this one and this one. And so what happens is because nondisjunction does not take place, they segregate correctly and so eventually they will form this normal cell number one and normal sperm cell number two, where each and every one of them will have the X chromosome. On the other hand, because nondisjunction we're assuming nondisjunction takes place within this cell once again this spindle fiber is not able to connect directly with this cystochromatid and so both of these cystochromatids are connected to this spinal fiber and they are pulled to that side during anaphase II of meiosis. And so what we end up forming is these two abnormal sperm cells.