DNA Polymorphism forms the basis of:

As polymorphism in DNA sequence is the basis of genetic mapping of human genome as well as of DNA fingerprinting. Polymorphism (variation at genetic level) arises due to mutations. New mutations may arise in an individual either in somatic cells or in the germ cells. If a germ cell mutation does not seriously impair individual’s ability to have offspring who can transmit the mutation, it can spread to the other members of population (through sexual reproduction).