Read the following statements:
$A.$ Variation at genetic level arises due to mutations.
$B.$ The technique of $DNA$ fingerprinting was initially developed by Alec Jeffreys.

In which of the following steps in the $DNA$ fingerprinting technique are labelled $VNTR$ probes used?

Satellite $DNA$ is a useful tool for......

Provide information about $VNTR$.

$A$: In $DNA$ fingerprinting,hybridization is done with molecular probes.
$R$: Molecular probes are small $DNA$ segments synthesized in the laboratory with a known sequence that recognize complementary sequences in $DNA$.

Select the correct sequence for the process of $\text{VNTR}$ technique.
$X =$ Hybridisation using labelled $\text{VNTR}$ probe
$Y =$ Digestion of $\text{DNA}$ by restriction endonucleases
$Z =$ Transferring (blotting) of separated $\text{DNA}$ fragments to synthetic membrane,such as nitrocellulose