Biolistics (gene gun) is suitable for

$I. … A…$ is the ability of a cell to take up foreign $DNA$

$II.$ The cell is treated with specific concentration of a divalent cation such as $… B…$ to increase pore size in cell wall

$III. $In $…C…$ method recombinant $DNA$ is directly injected into the nucleus of an animal cell

The most appropriate option regarding $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ is

Give differences : Restriction Endonuclease and Restriction Exonuclease

………in animals have the ability to transform normal cells into cancerous cells

$I.$ Ori also controls the copy number of thelinked $DNA$.

$II.$ If a foreign $DNA$ ligates at the Bam Hl site oftetracycline resistance gene in the vector $pBR322$, the recombinant plasmid loses the tetracycline resistance due to insertion offoreign $DNA$.

Choose regarding the above statements.