Mention the applications of DNA fingerprinting

The basis of DNA fingerprinting is:

What is principle of DNA fingerprinting.

What is it that forms the basis of DNA fingerprinting?

Explain in brief about the procedure of DNA fingerprinting.

Expand PCR and mention one application of this.

State principle underlying gel electrophoresis. Mention two applications of this technique iri biotechnology.

Who discovered DNA fingerprinting?