The DNA was not known until 1984 when Dr. Alec Jeffries, a genetics scientist at Leicester University in London, said the genetic material could be replicated several times, repeating itself in random, incomprehensible sequences.
He continued his research until one year later he concluded that these sequences are characteristic of each individual and can not be compared to two except in the case of identical twins only; the possibility of similarity between two genotypes between one person and another is one in a trillion, making similarities impossible. Dr. Alik recorded his patent in 1985 and called it the DNA Fingerprint. It was known as "a means of identifying a person by comparing DNA fragments, Sometimes called "DNA typing".
He continued his research until one year later he concluded that these sequences are characteristic of each individual and can not be compared to two except in the case of identical twins only; the possibility of similarity between two genotypes between one person and another is one in a trillion, making similarities impossible. Dr. Alik recorded his patent in 1985 and called it the DNA Fingerprint. It was known as "a means of identifying a person by comparing DNA fragments, Sometimes called "DNA typing".