$I.$ 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.

The first restriction endonuclease type $II$ $…A..$, was isolated by Smith, Wilcox and Kelley from $…B…$ bacterium. It was formed to cut $DNA$ molecules at a particular point by recognizing a specific sequence of six base pairs, known as the $ …C….$ Here $A, B$ and $C $can be

Which of the following is first restrictionendonuclease?

A plasmid

$DNA$ can be introduced into any cell by: