rDNA is using genetic cloning to form DNA molecules from different species. in this example you can make the hormone insulin by getting some of the components from one organism and getting the remainder from another organism. Specifically, Insulin has 2 amine chains, so you can get 1 amine chain from one organism, and the other from a different one. Then you can combine them and you'll get insulin.
C i believe bc cancer is characterized by uncontrolled cell division
What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.
