By the same exact analogy, this is identical to this. So these two are cystochromatids with respect to one another. So these two are cystochromatids. These two are cystochromatids. Now, these, with respect to one another, are homologous chromosomes in the same way that these two were homologous chromosomes up here. But now, once DNA replication took place, we form these two identical pairs of cystochromatids.