Who first suggested the bidirectional $DNA$ replication process?

$A$: Kornberg enzyme is associated with the removal of primers and thymine dimers.
$R$: $DNA$ polymerase $I$ performs exonuclease activity in $5^{\prime} \rightarrow 3^{\prime}$ and $3^{\prime} \rightarrow 5^{\prime}$ directions.

Identify the enzymes that synthesize $DNA$ from $RNA$.

$DNA$ polymerase enzyme is responsible for the synthesis of

$DNA$ polymerase enzyme is required for the synthesis of .......

Identify parts $A, B, C, D$ in the figure given below: