Genes for drug resistance may be present Select one:
a. on the chromosome.
b. on plasmids.
c. on mitochondrial DNA.
d. both on the chromosome and on plasmids.
e. both on plasmids and on mitochondrial DNA.
f. both on the chromosome and on mitochindrial DNA.

Explanation:

1. Drug resistance is the phenomenon in which the organism become resistance to drugs, means the drug against which the organism become resistance has no effect on that organism.

2. There are some genes which are responsible for drug resistance, they can transfer from one cell / organism to other via plasmids or other processes.

3. These genes can be located on  plasmids as well as on chromosomes.

Drug resistance microbes can grow in the presence of drug.

c is the correct answer hope this !

answerall of the above;