Several stages in the production of insulin by genetic modification are shown below. In what sequence do these stages happen? 1 cutting bacterial plasmid DNA with restriction enzymes 2 human gene expression in bacteria to produce insulin 3 putting recombinant plasmids into bacteria 4 reproduction of bacteria that contain recombinant plasmids
- A$1 \rightarrow 3 \rightarrow 4 \rightarrow 2$
- B$2 \rightarrow 1 \rightarrow 3 \rightarrow 4$
- C$3 \rightarrow 1 \rightarrow 2 \rightarrow 4$
- D$4 \rightarrow 1 \rightarrow 3 \rightarrow 2$