So gametosites are those cells that undergo meiosis. And meiosis actually involves two stages meiosis one and meiosis two. And because each one of these individual stages contains its own anaphase, there are two locations where nondisjunction can take place during the process of meiosis. So let's begin with anaphase one of meiosis one. So let's suppose we're at metaphase, and let's suppose that our cell consists of six chromosomes and not three chromosomes. So we take our gamethocide that consists of six chromosomes in human cells.