Which of the following is not a restriction enzyme?

About gene gun method:
$I.$ This method is also known as biolistic technique.
$II.$ In this method,cells are bombarded with high-velocity micro-particles of gold or tungsten coated with $DNA$ in plants.
$III.$ Important crop plants like maize,rice,and wheat have now been transformed by this method.
Which of the statements given above are correct?

Genes of interest can be selected from a genomic library by using

Identify the enzyme shown in the given figure.

The most important feature in a plasmid to be used as a vector is

Which of the following is associated with genetic engineering?