Explanation

DNA fingerprinting (= DNA typing = DNA profiling = genetic fingerprinting) was invented by Sir Alec Jeffreys of UK in 1985. It is a technique to identify a person on the basis of his or her DNA specificity. During this technique, the dark bands on X-ray film present the DNA fingerprint (= DNA profiles). It is very helpful in identifying criminals of rape/murder (using blood/semen/hair) as well as for settling matters related to parentage and paternity.