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. So these are identical to one another. These are identical to one another, but these are different with respect to one another. But we call them homologous because they still carry those genes that code for the same exact traits.