The technique of transferring $DNA$ fragments separated by agarose gel electrophoresis onto a synthetic membrane like nitrocellulose is known as:

$VNTRs$ are

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:

Comment on the utility of variability in the number of tandem repeats during $DNA$ fingerprinting.

In density gradient centrifugation,bulk $DNA$ forms a/an ......,while satellite $DNA$ forms a/an ...... .

Which of the following pairs of terms represents the same meaning?