| We...are not alone:
"An average human is normally host to billions of symbiotic organisms belonging to perhaps a thousand different species . . . His phenotype is not determined by his human genes alone but also by the genes of all the symbionts he happens to be infected with. The symbiont species an individual carries usually have a very varied provenance, with only a few being likely to have come from his parents."
Juan Delius
"The Nature of Culture" | 
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