Assertion (A) In transcription, the strand with 3' arrow 5' polarity acts as the template strand. Reason (R) The enzyme RNA polymerase catalyses the polymerisation in only one direction, i.e. 5' arrow 3'.

Question

Assertion (A) In transcription, the strand with 3' arrow 5' polarity acts as the template strand. Reason (R) The enzyme RNA polymerase catalyses the polymerisation in only one direction, i.e. 5' arrow 3'. (A) If both A and R are true and R is the correct explanation of A (B) If both A and R are true, but R is not the correct explanation of A (C) If A is true, but R is false (D) If A is false, but R is true

Tardigrade Admin · Accepted Answer

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
In transcription, the strand with

3^{'} \to 5^{'}

polarity acts as the template from which

m RN A

is transcribed as is called the template strand.
This is because the enzyme DNA-dependent RNA polymerase catalyses polymerisation in only

5^{'} \to 3^{'}

direction.

Q. Assertion (A) In transcription, the strand with 3′→5′ polarity acts as the template strand. Reason (R) The enzyme RNA polymerase catalyses the polymerisation in only one direction, i.e. 5′→3′.

If both A and R are true and R is the correct explanation of A

If both A and R are true, but R is not the correct explanation of A

If A is true, but R is false

If A is false, but R is true

Q. Assertion (A) In transcription, the strand with $3^{'} \to 5^{'}$ polarity acts as the template strand.
Reason (R) The enzyme RNA polymerase catalyses the polymerisation in only one direction, i.e. $5^{'} \to 3^{'}$ .