Which of the following is true of mutations?
-a.) most mutations are beneficial. -b.) mutations can sometimes produce organisms with new & desirable characteristics. -c.) mutations produce changes that are not inheritable. -d.) mutations do not generally occur on genes.

2.) what is the small circular dna molecule found in some bacteria that can be used for cell transformation?
-a.) dna polymerase. -b.) electrophoresis. -c.) plasmids. -d.) recombinant dna.