![A refined two-step oligoribonucleotide interference-PCR method for precise discrimination of nucleotide differences | Scientific Reports A refined two-step oligoribonucleotide interference-PCR method for precise discrimination of nucleotide differences | Scientific Reports](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fs41598-018-35479-0/MediaObjects/41598_2018_35479_Fig4_HTML.png)
A refined two-step oligoribonucleotide interference-PCR method for precise discrimination of nucleotide differences | Scientific Reports
The figure below shows three steps (A, B, C) of polymerase chain reaction ( PCR). Select the option giving correct identification together with what it represents?
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![Selective control of primer usage in multiplex one-step reverse transcription PCR | BMC Molecular Biology | Full Text Selective control of primer usage in multiplex one-step reverse transcription PCR | BMC Molecular Biology | Full Text](https://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2199-10-113/MediaObjects/12867_2009_Article_481_Fig1_HTML.jpg)