Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The figure given below shows three steps
A
, -Denaturation at a temperature of about 50 o C. -Annealing with two sets of primers.
B
, -Denaturation at a temperature of about 98 o C separating the two DNA strands.
C
of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? 
-Extension in the presence of heat stable DNA polymerase.
-Extension in the presence of heat stable DNA polymerase.
Text Solution
Verified by ExpertsThe correct answer is:
C
The figure shows the three basic steps of PCR (Polymerase Chain Reaction):
→ Denaturation (~95°C): DNA double helix separates into single strands
→ Annealing (~50–60°C): primers bind to template DNA
→ Extension (~72°C): DNA synthesis occurs using heat-stable Taq DNA polymerase
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