One type of these organisms uses reverse transcriptase in its replication process. One theory of their origin is the cellular origin hypothesis, which states that they evolved from DNA from plasmids or transposons. They are coated by a protein shell called a capsid. The tobacco mosaic one was the first of these to be discovered, and other types of 
One type of these organisms uses reverse transcriptase in its replication process. One theory of their origin is the cellular origin hypothesis, which states that they evolved from DNA from plasmids or transposons. They are coated by a protein shell called a capsid. The tobacco mosaic one was the first of these to be discovered, and other types of them include Epstein-Barr and Ebola. For 10 points, name these infectious agents, some of which cause influenza.
One type of these organisms uses reverse transcriptase in its replication process.
viruses