That's exactly why these are homologous. So during S phase of interface, before meiosis actually takes place, we replicate each one of these individual chromosomes. So we replicate the purple one and we produce this, and we replicate the brown one, and we produce this. Now, this is identical with respect to this, and that's exactly why we call them cystochromatids. So these two cystochromatids are identical with respect to one another. Now, on this chromosome, we also have two identical cystochromatids.