The smallest unit of genetic material which,when altered,results in a mutation is known as .....

One functional unit of a gene which specifies the synthesis of one polypeptide is known as:

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Monocistronic gene	$I$. Coding sequence
$B$. Polycistronic gene	$II$. Intervening sequence
$C$. Exons	$III$. Mostly prokaryotes
$D$. Introns	$IV$. Mostly eukaryotes

Given below are two statements.
Statement $I$: Heterocatalytic function of $DNA$ includes transcription and translation.
Statement $II$: $A$ unique feature of $DNA$ molecule which helps in its semiconservative duplication is the complementary nature of two strands.
In the light of the above statements,choose the correct answer from the options given below.

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Exon	$(I)$ Non-coding sequence
$(b)$ Intron	$(II)$ Coding sequence
$(c)$ Genetic code	$(III)$ Nucleosome
$(d)$ $DNA$ packaging	$(IV)$ Nirenberg,Khorana and Matthaei

The eukaryotic genome is different from the prokaryotic genome because . . . . . . .