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Why is a lab notebook important in DNA isolation?

Answer and explanation

Correct answer: To record the sample source, method, yield, and purity

A laboratory notebook creates a traceable record of what was done and what was observed during DNA isolation. Important entries can include sample identity and source, date, reagent or kit used, volumes, incubation conditions, centrifugation settings, deviations from the protocol, DNA concentration, purity ratio, and storage conditions. These details allow another person to repeat the procedure and help identify the cause of an unexpectedly low yield or poor-quality preparation. Option A is correct because it records scientifically relevant information and supports reproducibility, troubleshooting, and sample tracking. The other options describe irrelevant observations and would not document the experimental procedure or DNA quality adequately.

Related tags

Laboratory NotebookRecord KeepingDna IsolationIsolation Of DnaProcesses Of Recombinant Dna TechnologyBiotechnologyClass 11 Mcq

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