$DNA$ fingerprinting is a technique used to identify and analyse the variations in various individuals at the level of $DNA$. It is based on variability and polymorphism in $DNA$ sequences.

Application

It is used in forensic science to identify potential crime suspects.

It is used to establish paternity and family relationships.

It is used to identify and protect the commercial varieties of crops and livestock.

It is used to find out the evolutionary history of an organism and trace out the linkages between groups of various organisms.