Identical cystochromatids and let's assume that nondisjunction does not take place during my Ptosis during meiosis one so during meiosis one, we have the normal segregation process taking place so these fibers are able to extend they form connections with these chromosome pairs and they move apart to form the following two cells. So cell number one and cell number two that are normal now in anaphase of meiosis two. So anaphase two of meiosis. Now, we have nondisjunction take. Place in both of these cells. Now, of course, we can have nondisjunction taking place in one of these two cells, but let's assume that nondisjunction takes place in both of these cells.