Isolation - the process of removing DNA from a cell
Cutting and ligation - cutting is the removing of a gene from a piece of DNA using restriction enzymes
transformation - the uptake of recombinant DNA into a bacterial cell
cloning - the production of identical copies of a cell
expression - the stimulation of a cell to produce a product of a particular gene
plant - many commercially grown plants have ben engineered to be resistant to certain weed killers
animal - a human gene has been inserted into sheep which allows the adult sheep to produce a clotting chemical needed by haemophiliacs to clot their blood
mirco-organisms - the human insulin gene has been inserted into a bacterium which allows the bacterium to produce insulin for diabetics