Normal $E.$ coli cells carry resistance against which of the following antibiotics?

Restriction endonucleases are:

Match the column-$I$ with column-$II$ with respect to the nomenclature of enzyme $Eco RI$ and select the correct answer from the codes given below.

Column-$I$	Column-$II$
$(A) E$	$(1) 1^{st}$ in order of identification
$(B) co$	$(2)$ Name of genus
$(C) R$	$(3)$ Name of species
$(D) I$	$(4)$ Name of strain

Identify the palindromic nucleotide sequence.

Sticky ends are helpful in the action of which enzyme?

$I.$ $Ori$ also controls the copy number of the linked $DNA$.
$II.$ If a foreign $DNA$ ligates at the $BamHI$ site of the tetracycline resistance gene in the vector $pBR322$,the recombinant plasmid loses the tetracycline resistance due to the insertion of foreign $DNA$.
Choose the correct option regarding the above statements.