Study the given figure of a nucleosome and select the option that correctly identifies the parts $A, B$ and $C$.

Identify the structure shown in the figure.

The diagram shows an important concept in the genetic implication of $DNA$. Fill in the blanks $A$ to $C$.

The complete flow chart of the Central Dogma is:

Consider the following four statements $(a-d)$ and select the option which includes all the correct ones only $:-$
$(a)$ Transcription and translation can be coupled in bacteria.
$(b)$ The split gene arrangements represent the advanced feature of the genome.
$(c)$ The process of splicing represents the dominance of $\text{RNA-}$world.
$(d)$ The presence of introns in split gene is reminiscent of antiquity.

What does the figure shown above represent?