Identify the figure given below.

Read the following statements carefully and select the correct option $:-$
$(A)$ Source of the restriction enzyme Hind $II$ is Haemophilus influenzae.
$(B)$ If any protein encoding gene is expressed in a heterologous host,it is called as recombinant protein.
$(C)$ Microinjection method for injecting foreign gene is used for animal cell.
$(D)$ $\text{DNA}$ primers are chemically synthesized oligonucleotides that are complementary to the regions of $\text{DNA}$ in $\text{PCR}$.
How many of the above statements are correct?

Which of the following restriction enzymes used in recombinant $DNA$ technology produces staggered cuts (sticky ends) in $DNA$?

An antibiotic resistance gene in a vector helps in the selection of:

Identify the correct match for the given apparatus.
Apparatus $\to$ Function

Identify $X$ and $Y$ from the given figure of the cloning vector $pBR322$.