阿摩線上測驗
18. The most common DNA-binding motif is the
(A)non-helical zipper
(B)leucine zipper
(C)zinc finger
(D)helix-turn-helix
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統計： A(0), B(0), C(2), D(2), E(0) #3105066
統計： A(0), B(0), C(2), D(2), E(0) #3105066
