Summary of sources of DNA available for recombination by viruses of various protists. Any DNA that is able to find its way into a cell’s cytoplasm, even accidentally, has a potential to become incorporated into preexisting DNA found within that cell, either as associated with the cell nucleus or with the virion factory structure (yellow) of infecting DNA viruses [62, 69, 71]. This illustration is also an elaboration on the “You are what you eat” hypothesis of Ford Doolittle [75] as elaborated further upon also by Andersson [76], Keeling and Palmer [77], and Abedon [30].
