DNA polymorphism forms the basis of :
DNA finger printing
Both genetic mapping and DNA finger printing
Translation
Genetic mapping
DNA polymorphism is a difference in DNA sequence among individuals, groups, or populations.
Genetic mapping refers to the process of determining the location of genes on chromosomes.
DNA fingerprinting is a laboratory technique used to determine the probable identity of a person based on the nucleotide sequences of certain regions of human DNA that are unique to individuals.
Therefore, DNA polymorphism forms the basis of genetic mapping and DNA fingerprinting.
Hence, the correct option is (2)