Give scientific reasons: $DNA$ polymorphism is the basis of genetic mapping of human genome.

(N/A) $DNA$ polymorphism refers to the variation at the genetic level where multiple alleles exist at a specific locus.
These variations are inherited from parents to offspring,making them stable markers for genetic analysis.
Mutations in non-coding sequences accumulate over time,creating unique patterns of polymorphism.
Because these variations are heritable and show high variability among individuals,they serve as landmarks for mapping genes on chromosomes.
Consequently,$DNA$ polymorphism is the fundamental basis for genetic mapping of the human genome and techniques like $DNA$ fingerprinting.