Q. Assertion: In a transcription unit, DNA strand with polarity 5’ → 3’ is called coding strand. Reason: The coding strand acts as template strand for the synthesis of RNA during transcription.
A) Both assertion and reason are true and reason is the correct explanation of assertion.
B) Both assertion and reason are true but reason is not correct explanation of assertion.
C) Assertion is true, but reason is false.
D) Both assertion and reason are false.
Explanation
The template strand for transcription is the one with polarity 3’ → 5’ while the coding strand has polarity 5’ → 3’. The coding strand does not code for anything during transcription.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.