Small non-protein coding RNAs are involved in pathways that control the genome at the level of chromatin. In Schizosaccharomyces pombe. small interfering RNAs (siRNAs) are required for the faithful propagation of heterochromatin that is found at peri-centromeric repeats. In contrast to repetitive DNA. https://allfixelectricales.shop/product-category/dishwasher-basket-wheel-axle/