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World 5 · Copying DNA and DNA Fingerprinting · 11 min · PRO

Copying DNA: the PCR idea

How a few cells become millions of copies

PRO · Forensic Science

World 5: Copying DNA and DNA Fingerprinting is part of PRO

The first world of Forensic Science is free. PRO opens the other 22 lessons in 6 worlds — simulations, quizzes and all.

  • DNA as an ID: what is (and is not) in a profile
  • Three temperatures, one cycle
  • The gel: sorting DNA by size
  • Reading the bands: a match, a mixture, a doubt
  • Natural and synthetic fibres
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  • Practice exams and certificates

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