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Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

1. Polymerase chain reaction
2. Zinc finger analysis
3. Restriction enzymes
4. DNA-DNA hybridization

Correct answer: Zinc finger analysis

Solution

Zinc fingers are structural motifs in proteins that bind DNA; they are not part of any standard DNA fingerprinting technique. Current fingerprinting methods rely on PCR, restriction enzymes, and/or DNA-DNA hybridization.

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