02-27-2015, 05:37 AM
Transgenic is contrasted with cisgenic. The former means transferring genes between non related species and the former means transfers between species that typically can interbreed with each other. An example of transgenic gene transfer is the GMO papaya varieties where a fragment of the ring spot virus was inserted into the papaya chromosome to initiate resistance to the disease. Similarly, it's becoming fairly well established that the human genome has areas contributed by accretion of viral and bacterial genes over the ages.