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There are basically two types of contamination, laboratory and external. If a PCR product is found to be contaminated by bacteria. It comes under laboratory contamination.

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in Genetic Engineering by (118k points)
There are basically two types of contamination, laboratory and external. If a PCR product is found to be contaminated by bacteria. It comes under laboratory contamination.

(a) True

(b) False

The question was asked in final exam.

The question is from Precautions and Drawbacks topic in portion Polymerase Chain Reaction of Genetic Engineering

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Best answer
Correct choice is (b) False

The best explanation: Laboratory contamination consists of aerosols in pipettes from previously formed PCR products or related DNA sequences. External contamination includes contamination from bacteria, fungi and other human contamination.

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