thus in course of nuclease treatment of erythrocyte nuclei two chromatin fractions can be observed , one of them containing the dna of transcriptionally active genes loses its terminal dna regions owing to rapid degradation of cleaved nucleosome linkers , while the other containing the dna of repressed genes maintains its terminal linker dna and gives rise to the associated oligonucleosomes .
C0007610
nuclei
C0008546
chromatin