Biology, 04.03.2020 23:45 lilmamaforev5093
Which statement BEST explains how RNA polymerase knows where to start and stop making an RNA copy of DNA?
A. The enzyme binds to a sequence of nucleotides called introns that are cut out before they become functional.
B. The enzyme proofreads each DNA strand to help ensure each molecule is copied exactly in the order of the original strand.
C. The enzyme splices exons together before transcription begins to form the final mRNA molecule.
D. The enzyme only binds to regions of DNA known as promoters, which have specific base sequences.
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