The one-gene-one-enzyme relationship was first established in.....

How many of the following statements are correct?
$I - RNA$ is formed from $DNA$ by the process of transcription.
$II - DNA$ is more stable than $RNA$.
$III - RNA$ acts as a catalyst (enzyme) in some biochemical reactions.
$IV - DNA$ is resistant to mutations due to its double-helical structure and the presence of complementary strands that allow for repair mechanisms.

Define/Explain the following:
$1.$ Nucleotide
$2.$ Central Dogma

What does the figure shown above represent?

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A$. Alfred Hershey and Martha Chase	$I$. Streptococcus pneumoniae
$B$. Euchromatin	$II$. Densely packed and dark-stained
$C$. Frederick Griffith	$III$. Loosely packed and light-stained
$D$. Heterochromatin	$IV$. $DNA$ as genetic material confirmation

Choose the correct answer from the options given below:

Assertion $(A):$ The split gene arrangement represents probably an ancient feature of the genome.
Reason $(R):$ $\text{hnRNA}$ undergoes additional processing called as capping and tailing.
Choose the correct option.