The term DNA Finger printing is also known as DNA Typing, Genetic Profiling or Genotyping, it is a process in which the DNA characteristics of a person is determined by isolating and identifying variable elements in the base-pair sequence of DNA. By developing this method in 1984 the British geneticist Alec Jeffery found that some sequence area unit extremely variable Deoxyribonucleic acid called as minisatellites. These minisatellites do not have contribution in functioning of DNA and are repeated in the genes. Geneticist found that in every person there is a unique pattern of these minisatellites except the identical twins.