Where does $RNA$ polymerase bind to $DNA$?

$A$ geneticist isolates a gene for a specific trait under study; she also isolates the corresponding $mRNA$. Upon comparison,the $mRNA$ is found to contain $1,000$ fewer bases than the $DNA$ sequence. Did the geneticist isolate the wrong $DNA$?

What is the role of $RNA$ polymerase $III$ in the process of transcription in eukaryotes?

Capping is a process in which ............. .

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Splicing	$(1)$ Contains only exons
$(b)$ Capping	$(2)$ Addition of adenylate residues
$(c)$ Tailing	$(3)$ Removal of introns
$(d)$ $mRNA$	$(4)$ Addition of methyl guanosine triphosphate

Which of the following statements are correctly related to the given diagram of transcription?
$(a)$ $A$ is the Coding strand
$(b)$ $A$ is the Non-coding strand
$(c)$ $B$ is the Antisense strand
$(d)$ $B$ is the Sense strand