30. In eukaryotic cells, distal control elements that can be located far upstream or downstream of a gene are called_____.
(A) promoters
(B) enhancers
(C) transcription factors
(D) TATA boxes
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統計: A(0), B(0), C(0), D(1), E(0) #4063988
統計: A(0), B(0), C(0), D(1), E(0) #4063988