Question: The figure below shows three steps (A, B, C) of polymersase chain reaction (PCR). Select the correct identification together with what it represents
1. B - Denaturation at a temperature of about 98°C separating the two DNA strands
2. A - Denaturation at a temperature of about 60°C
3. C - Extension in the presence of heat stable DNA polymerase
4. A - Annealing with two sets of primer
Answer: c
