Hind $II$ always cuts $DNA$ molecules at a particular site called recognition sequence and it consists of : (in $bp$)

Agrobacterium tumefaciens contains a large plasmid that induces tumors in plants,known as:

Which of the following is used as a recombination vector?

Which was the first restriction endonuclease isolated and identified?

Which is the first restriction endonuclease discovered?

Which of the following statements is not correct regarding the $Eco RI$ restriction endonuclease enzyme?
$I.$ $Eco RI$ restriction endonuclease enzyme is isolated from $Escherichia \; coli \; RY13$.
$II.$ Its recognition sequence is $5^{\prime}-GAATTC-3^{\prime}$ / $3^{\prime}-CTTAAG-5^{\prime}$.
$III.$ Its site of cleavage is between $G$ and $A$ in the sequence $5^{\prime}-GAATTC-3^{\prime}$.