Give scientific reasons :
DNA fingerprinting is useful in forensic sciences and paternity testing .

Explanation

DNA sample helps to establish identity of each individual .
(ii) Each individual has a unique DNA sequence pattern and so it is called as DNA fingerprint of each individual .
(iii) Identity of a criminal can be found easily from various sources of DNA (blood, semen , etc) on a crime scene.
(iv) DNA fingerprinting is also done for paternity testing .