Final answer:
R plasmids often contain genes that control conjugation and transfer of the plasmid. They also commonly contain multiple genes that confer resistance to multiple antibiotics, making them important for the spread of antibiotic resistance in bacterial communities.
Step-by-step explanation:
R plasmids, also known as resistance plasmids, often contain genes that control conjugation and transfer of the plasmid. These plasmids can transfer between cells of the same species and even between cells of different species.
In addition to the genes involved in plasmid transfer, single R plasmids commonly contain multiple genes that confer resistance to multiple antibiotics. This makes them important for the spread of antibiotic resistance in bacterial communities.