(or DNA fingerprinting) allows for a species to be identified as accuratly as scientifically possible.
In terms of evoultion, this type of testing allows for species to be identified as a new species, possibly re-classified, allows
Recent news articles which have to do with genetic fingerprinting and evolution:
Leggless lizards found at LAX in October, 2013: http://articles.latimes.com/2013/sep/22/local/la-me-legless-lizard-20130923
The Velvet worm connects with its ancestrial species according to Live Science, September 2013: