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What does low yield but good purity indicate?

Answer and explanation

Correct answer: The DNA is clean but its quantity is low

The governing concept is the distinction between quantity and quality in a DNA preparation. Yield describes how much DNA has been recovered, commonly estimated from concentration multiplied by sample volume. Purity describes the relative absence of contaminants such as protein, salts, solvent, or residual reagents, often assessed through absorbance ratios or another quality test. These measurements are related but not identical. A preparation can therefore have a favorable purity result while containing only a small amount of DNA. Option B is correct. Good purity does not mean high yield, and low yield does not prove that no DNA was isolated or that the material is protein.

Related tags

Dna YieldDna PurityDna QualityIsolation Of DnaProcesses Of Recombinant Dna TechnologyBiotechnologyClass 11 Mcq

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