Module 4 :: Intro To the Lab
Topic 1 :: History and Development of Forensic DNA Analysis
Iso-Enzyme and Protein Typing
First introduced into forensic applications in the 1970s, iso-enzyme and protein variant typing took the power of ABO grouping one step further. The typing of proteins and enzymes in biological evidence offered greater discriminating power, with some types occurring in less than 1% of the population.
Iso-enzyme testing encouraged forensic scientists to perform more work with less sample, allowing one sample to be tested for multiple enzyme types.