In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?

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 not a method of introducing alien $DNA$  into host cells?

The cutting of $DNA$ by restriction endonucleasesresults in the fragments of $DNA$. These fragments can be separated by a technique known as ……

Which of the following methods(s) is used to introduce foreign $DNA$ into host cells?