Instead, they are usually super coiled into these super coils and superheles that are much more condensed and much more compact. Now, as I mentioned earlier, all living organisms, including individual cells and those organisms containing many, many cells, all these cells contain DNA as the carrier of genetic information. Now, although some viruses do contain DNA as that carrier of genetic information, other viruses, such as, for example, the tobacco mosaic virus TMV, contains RNA as the carrier of genetic information. So this is in contrast to living organisms that contain DNA and always DNA as the carrier of the genetic information. So what exactly is a virus? Well, a virus is this non living agent that consists of a protein capsule and inside the protein capsule we have some type of genetic information.