Ascientist wants to be able to artificially produce a protein that is produced in the livers of frogs. the scientist has located all of the mrna produced by the liver and produced the cdna. what should the scientist do to find the gene that produces this protein? a. insert the cdna into a bacteria sample. b. use reverse transcriptase on the cdna. c. mix the cdna with the liver dna. d. produce rna from the cdna.