Now, because we're assuming no nondisjunction took place within this stage, we're going to have two normal haploid cells after meiosis one. Now, let's suppose because the female's age is, let's say, relatively high, the chance of nondisjunction will increase. And so now let's suppose non disjunction takes place within this cell, but this cell divides normally. So what happens is, within this particular cell, each of these fibers attaches onto each one of these respective identical cysticromatides. And so following cytokinesis, after metaphase two of meiosis, we formed the following two normal X cells. Notice that these two X cells are normal because they contain the proper number of chromosome 21.