You should ask your teacher to be sure, but I think that you teacher meant like the mode of transmission.... Like genetically inherited and such.
I believe the answer should be mates...(2)
The answer is C. (The second B).
Because, Bacteria are key to recombinant DNA technology because of one simple fact. The reproduce rapidly.
In 1953, he developed a method to make strains of wheat highly resistant to a single form of rust.<span>
</span><span>
</span>