Genetic Fingerprinting

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  • Created by: Jmarie
  • Created on: 05-05-15 17:30

Genetic fingerprinting: compares the numer of times a sequence is repeated (and so the number of nucleotides) at different specific loci in the genome between individuals.

1) DNA is extracted from the source cells of different patients OR different species and amplified by PCR to make enough DNA for hybridisation.

2) The DNA samples are cut using/ digested using a specific restriction endonuclease enzyme into many small restriction fragments.

3) The fragments will be different in lengths depending on the number of tandem repeats in each restriction fragment


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