$DNA$ polymorphism forms the basis of:

Matching sequence of $DNA$ between two evidences,one of the criminal with the suspect is known as:

Variable number of tandem repeats $(VNTRs)$ in the $DNA$ molecule are highly useful in

What is the basis of $DNA$ fingerprinting?

Arrange the various steps of $DNA$ fingerprinting technique in the correct order.
$(I)$ Separation of $DNA$ fragment by electrophoresis.
$(II)$ Digestion of $DNA$ by restriction endonucleases.
$(III)$ Hybridization using labeled $VNTR$ probe.
$(IV)$ Isolation of $DNA$.
$(V)$ Detection of hybridized $DNA$ fragments by autoradiography.
$(VI)$ Transferring of separated $DNA$ fragment to synthetic membranes.

In a crime investigation,the investigating officer collects different biological samples from the crime spot for $DNA$ fingerprinting analysis. Which of the following samples is not helpful in this analysis?