Short description
A resistance gene contains the information for the production of a protein that makes an antibiotic ineffective and hence confers resistance against an antibiotic to a
pathogen.
Detailed description
Resistance genes are usually found on a ring-shaped piece of DNA, the plasmid. Like this, they can easily be passed on from one bacterium to another. Plants can possess resistance genes as well. They are usually directed against herbicides and pests.