INFECTIOUS NUCLEUS. “Of particular interest, such a transfer of an ‘infectious’ nucleus is well documented in many parasitic red algae. Such back-and-forth eukaryogenesis-viriogenesis could readily explain the multiplicity of present-day virus lineages, together with their diversity in size, complexity and gene complement, as well as the apparent mixture of monophyly and polyphyly (descent from more than one ancestor) exhibited by the viral world.”
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