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Why is contamination control very important in forensic DNA samples?

Answer and explanation

Correct answer: External DNA can create an incorrect DNA profile

Forensic samples may contain only a small amount of DNA. If external DNA enters the sample, it can produce a mixed or incorrect DNA profile, affecting identification and legal conclusions. Option B is wrong because contamination can alter or obscure the profile, not merely increase the DNA quantity. Exam tip: the key danger of forensic DNA contamination is the introduction of DNA from the wrong person.

Related tags

Forensic DnaContamination ControlDna ProfilingLow Template DnaForensic EvidenceIsolation Of DnaProcesses Of Recombinant Dna TechnologyBiotechnology

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