Why are plasmids so widely used in recombinant DNA studies A

Why are plasmids so widely used in recombinant DNA studies?

A. because they naturally contain much foreign DNA

B. because they can be used to transform bacteria

C. because they cannot be cut with restriction enzymes

D. because it is difficult to insert new genes into them

Solution

Because they can be used to transform bacteria by inserting the plasmid into bacteria by using restriction endonucleases. The plasmid can be easily isolated since they are smaller than the host chromosome in size and easily reintroduced into the bacterium. In plasmid the complete DNA sequence is known.hence easy to operate.