Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 15 PCB Single Correct MCQ
Published on: August 14, 2026

The enzymes for replication and transcription do not differ in:

A
Dependency on a 3'- OH group for initiation
B
Direction of synthesis of the new polynucleotide chain
C
Type of pyrimidines they use during synthesis of polynucleotides
D
Type of polynucleotide they synthesise

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Text Solution

Verified by Experts
The correct answer is:
B

Replication requires a primer with a free group for DNA polymerase to start.
Transcription does not require a primer; RNA polymerase can initiate directly.
Both DNA polymerase (replication) and RNA polymerase (transcription) synthesize in the direction.

Replication (DNA): uses Cytosine and Thymine (T).

Transcription (RNA): uses Cytosine and Uracil (U).

In replication DNA strand is synthesised while in transcription, RNA strand is being synthesised.

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