We basically have 23 pairs of these tetris found at the center of our cell in metaphase. So let's suppose this is metaphase one of meiosis one, and we have the six chromosomes, and we have these three tetris. So each one of these pairs are homologous chromosomes that have undergone a genetic recombination process known as crossing over. Basically, line up at the center of our cell. Now, once again, what we can have is the spindle fiber basically fails to actually attach to one side of the tetris. And what happens when anaphase takes place?