What is the difference between the Plasmid method and Recombinant DNA in genetic engineering?

Friday, October 2nd, 2009 at 4:05 pm

I have a bio paper due soon and I can't figure out all of the methods. My teacher wanted the four major methods of genetic engineering and so far I've narrowed it down to the vector method, bioballistics, the plasmid method and recombinant DNA. The plasmid method and recombinant DNA sound nearly identical and if they are the same then what would the fourth method be?