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The figures below shows three steps (A,B...

The figures below shows three steps (A,B,C) of polymerase chain reaction (PCR). Select the option giving correct identification together with what it represents ?

A

C-extension in the presence of heat stable DNA polymerase

B

A-Annealing with two sets of primers

C

B-Denaturation at a temperature of about `98^(@)C` separating the two DNA strands

D

A-extension at a temperature of about `50^(@)C`

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The correct Answer is:
A
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