Who discovered $DNA$ fingerprinting?

In $DNA$ fingerprinting technique,the radioactive intermediates formed during hybridization are . . . . . . molecules.

Given below are two statements.
Statement $I$ - In the population,every person shows unusual sequences of $20-100$ base pairs,which are repeated several times and are termed as $VNTRs$.
Statement $II$ - $VNTRs$ are same in each individual and hence is the key factor in $DNA$ profiling.
In the light of above statements,select the correct option given below:

In Northern blotting,$RNAs$ are separated by gel electrophoresis and the $RNA$ bands are transferred onto a membrane of:

$DNA$ polymorphism forms the basis of:

Restriction endonuclease,in $DNA$ fingerprinting,carries out the following process: