複選題
30. Supercoiled DNA can be relaxed by ________.
(A) catenation
(B) intercalation
(C) nicking one strand
(D) hybridization
(E) denaturation
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統計: A(15), B(30), C(70), D(5), E(36) #1997389
統計: A(15), B(30), C(70), D(5), E(36) #1997389