Arrange the following steps in correct sequence during the process of transcription.
I. Breakage of hydrogen bonds between the template DNA and transcript.
II. Breakage of hydrogen bonds between the coding strand and template strand of DNA.
III. Formation of hydrogen bonds between template DNA and RNA being transcribed.
IV. Formation of hydrogen bonds between coding strand and template strand

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II, III, IV, I

II, III, I, IV

III, II, IV, I

IV, I, III, II

answer is B.

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Detailed Solution

During transcription, initially the hydrogen bonds between the template strand and coding stand of DNA at promoter and broken. In the next step, with the recruitment of nucleotides over template strand, hydrogen bonds are formed between the template strand and newly forming RNA molecule. In the third stage, the hydrogen bonds between the template strand and RNA are broken and lastly, the hydrogen bonds are reestablished between the coding and template strands of DNA.

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