Dna fingerprinting
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DNA Fingerprinting. DNA Fingerprinting. In DNA Fingerprinting, the DNA of an organism is cut up into fragments using restriction enzymes producing a large number of short fragments of DNA Because no two individuals have identical DNA, no two individuals will have the same length fragments.

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Dna fingerprinting1
DNA Fingerprinting

  • In DNA Fingerprinting, the DNA of an organism is cut up into fragments using restriction enzymes producing a large number of short fragments of DNA

  • Because no two individuals have identical DNA, no two individuals will have the same length fragments


Gel electrophoresis
Gel Electrophoresis

  • Gel electrophoresis is a technique used to separate the DNA fragments according to their size

  • The fragments are placed in wells on a sheet of gelatin, and an electric current is applied to the sheet





  • Used to are able to move through the pores in the gelatin faster analyzegenes to test for presence of different alleles

    • If a person was homozygous for a trait, the DNA would be cut by the same restriction enzyme in the same place because alleles are the same

Allele from Dad

Allele from Mom


Allele from Dad

Allele from Mom


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