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What is the purpose of a DNA extraction positive control?

Answer and explanation

Correct answer: To confirm that the extraction procedure and reagents are working as expected

A DNA extraction positive control uses a known sample that is expected to yield DNA. If DNA is obtained from it as expected, the extraction steps and reagents are considered to be functioning properly. Contamination is usually checked using a negative control, not a positive control. Exam tip: a positive control should give the expected positive result, whereas a negative control should not give a result.

Related tags

Dna ExtractionPositive ControlQuality ControlRecombinant Dna TechnologyMolecular BiologyIsolation Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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