Match the following:

Column $I$	Column $II$
$A$. $VNTR$	$p$. Largest gene
$B$. Introns and exons	$q$. $DNA$ fingerprinting
$C$. Dystrophin	$r$. Bulk $DNA$
$D$. Satellite	$s$. Splicing

Match the following:

Column-$I$	Column-$II$
$(1)$ Ligase	$(p)$ Segment of $DNA$
$(2)$ $RNA$ polymerase + Rho factor	$(q)$ Replication
$(3)$ $RNA$ polymerase	$(r)$ Termination
$(4)$ Cistron	$(s)$ Elongation

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Chromosome	$(P)$ Genetic code
$(2)$ $m-RNA$	$(Q)$ Gene
$(3)$ $t-RNA$	$(R)$ Ribosome
$(4)$ $r-RNA$	$(S)$ Anticodon

Read the following four statements ($1$ to $4$):
$1$. In transcription,uracil pairs with adenosine.
$2$. Regulation of $lac$ operon by a repressor is referred to as positive regulation.
$3$. The human genome contains approximately $50,000$ genes.
$4$. Haemophilia is a sex-linked recessive disease.
How many of the above statements are correct?

Match the following in column $I$ with column $II$ and choose the correct combination.

Column $I$	Column $II$
$a.$ Termination	$i.$ Aminoacyl $t-RNA$ synthetase
$b.$ Translation	$ii.$ Okazaki fragments
$c.$ Transcription	$iii.$ $GTP$ dependent release factor
$d.$ $DNA$ replication	$iv.$ $RNA$ polymerase

Read the following statements carefully and choose the correct statements.
$(A)$ In a transcription unit,the promoter is located at the $5'$ end of the coding strand.
$(B)$ The single strand $DNA$ having the polarity $5' \rightarrow 3'$ is the template strand.
$(C)$ $RNA$ polymerase binds to the operator during transcription.
$(D)$ Single base $DNA$ differences occurring in humans are called Single Nucleotide Polymorphisms $(SNPs)$.