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Answer: 3. Purification of isolated protein

PCR amplifies a chosen DNA segment from small amounts of DNA. It is used for gene amplification, molecular diagnosis (for example early detection of HIV or mutations) and detecting gene mutations.

Purification of an isolated protein is done by chromatography and similar methods, not by PCR, because PCR works on DNA.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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