The first step in transcription is that the original DNA strand is unzipped. That is option B.
Transcription in genetics is defined as a way by which cells produce Ribonucleic acid from an existing Deoxyribonucleic acid sequence.
The first step of transcription is called initiation. This is when signals are sent to the DNA to unwind (unzipped) so the enzyme can read the bases in one of the DNA strands.
Therefore, during the first step in transcription, the original DNA strand is unzipped.
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