The right answer is All answer options describe plasmids.
A plasmid is a natural or artificially modified circular DNA molecule for use in biological research.
The researchers use the plasmids to insert a DNA fragment of interest, thanks to the cloning cassettes. They can clone genes to express proteins or RNAs and analyze them.
D is the correct answer :)
<span>C. controls which substances enter and exit the cell
Good Luck!!</span>
The numbers are 2 of them
