Select the correct option with respect to transcription.
Direction of RNA synthesis Direction of reading of the template DNA strand
1 5' →3' 3' →5'
2 3' →5' 5' →3'
3 5' →3' 5' →3'
4 3' →5' 3' →5'

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answer is A.

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Detailed Solution

DNA-dependent RNA polymerase catalyse the polymerisation in only one direction, that is, 5'→3' and therefore direction of RNA synthesis is 5' →3'.

The strand that has the polarity 3'→5' acts as a template, and is also referred to as template strand.

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	Direction of RNA synthesis	Direction of reading of the template DNA strand
1	5' →3'	3' →5'
2	3' →5'	5' →3'
3	5' →3'	5' →3'
4	3' →5'	3' →5'