Because the potatoes grow inside the hay bale, the bale can be positioned in areas where the soil is unsuitable for gardening or even on top of paved areas. However, water does drain from the bottom of the bale, so choose an area where this is not an issue.
Bacteria have exhibited colistin resistance in the past, but this time it is different: Previous forms of the resistance weakened the microbes, and the resistance genes were located on DNA that was not easily shared among bacteria.
1 Scientists can force bacteria to keep them. 2  Virtually all plasmids that are used to deliver DNA contain genes for antibiotic resistance. 3  Once bacteria have been treated with a plasmid, scientists grow them in the presence of antibiotic.4  Only those cells that contain the plasmid will survive, grow and reproduce.acterial DNA â a circular chromosome plus plasmids. The DNA of most bacteria is contained in a single circular molecule, called the bacterial chromosome. The chromosome, along with several proteins and RNA molecules, forms an irregularly shaped structure called the nucleoid.