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. And these two chromosomes, just like these two individual chromosomes, are said to be homologous with respect to one another. So we basically double the number of chromatids, but the number of pairs remains the same. We have one pair and one pair here, but we have four chromatids here and only two chromatids here.