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If you have plasmid DNA and want to isolate a specific gene, do you need to...

If you have plasmid DNA and want to isolate a specific gene, do you need to perform both RFLP and PCR? Or would only one of those techniques be needed?

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Answer #1

Only Polymerase Chain Reaction (PCR) technique is sufficient to isolate specific gene from the plasmid DNA.

Polymerase Chain Reaction (PCR) amplifies specific region in the DNA strand by using primers (in our scenario plasmid DNA region is target where specific gene is present).

RFLP technique is used for identification of variations/polymorphisms in the homologous DNA sequences, so this technique is not used in isolation of specific gene from the plasmid DNA.       

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