Mention the number of primers required in each cycle of polymerase chain reaction (PCR).

Explanation

**Step-by-Step Solution:**

1. **Understanding PCR**: The Polymerase Chain Reaction (PCR) is a technique used to amplify specific segments of DNA. It involves repeated cycles of heating and cooling to denature the DNA, anneal primers, and extend new DNA strands.

2. **Role of Primers**: Primers are short sequences of nucleotides that provide a starting point for DNA synthesis. They are essential for the DNA polymerase enzyme to initiate the replication process.

3. **Number of Primers**: In each cycle of PCR, two different primers are required. These are known as:
- **Forward Primer**: Binds to the start of the target DNA sequence on one strand.
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