And these fibers should attach onto each one of these respective chromosome pairs. And during anaphase one of meiosis, we have the segregation, the movement of these chromosome pairs to opposite poles. And so after meiosis one takes place, we form these two haploid cells. 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.