18.請依核染色質(chromatin)的結構層級由低到高排序
(A)核仁小體(nucleosome),蛋白形成染色絲(chromatin fiber),環狀域(looped domain)
(B)環狀域(looped domain),蛋白形成染色絲(chromatin fiber),核仁小體(nucleosome)
(C)環狀域(looped domain),核仁小體(nucleosome),蛋白形成染色絲(chromatin fiber)
(D)核仁小體(nucleosome),環狀域(looped domain),蛋白形成染色絲(chromatin fiber)
(E)蛋白形成染色絲(chromatin fiber),核仁小體(nucleosome),環狀域(looped domain)