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HESI BiologyTools that read and edit DNA

Biotechnology BasicsHESI A2 cheat sheet

Tools that read and edit DNA

7 key facts Reviewed Oct 2026
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Pcr

  • Polymerase chain reaction amplifies a DNA segment
  • Cycles of heating and cooling make millions of copies

Gel Electrophoresis

  • Separates DNA fragments by size
  • Smaller fragments travel farther

Cloning & Gmos

  • Inserting a gene into another organism
  • Used for insulin production and crop traits

Uses

  • Diagnostics, forensics, paternity testing, gene therapy
Key takeaway

Tools that read and edit DNA

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