i. The DNA sequence pattern of every individual in unique as that of the fingerprints.
ii. A person's identity can be established with the help of a DNA sample. This is known as DN fingerprinting.
iii. At a crime scene, any source of DNA (blood, semen, etc.) found can be used to establish the identity of the criminal.
iv. Also, paternity testing or the identity of a child; father can be established using DNA fingerprinting.