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4 July, 23:08

Which of the following steps happens first during transcription?

A. RNA polymerase reaches the end of the gene.

B. RNA polymerase reaches the beginning of a gene.

C. RNA polymerase pulls apart the double helix.

D. RNA polymerase produces mRNA from DNA.

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  1. 4 July, 23:25
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    The first step in gene expression would be the transcription of RNA. What happens here is that a part of the DNA is being replicated into the RNA through an enzyme. Therefore, what happens first during transcription is that, the RNA polymerase reaches the start of a gene. The answer would be B.
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