The production or formation of an organism of one kind by an organism of another, as was formerly believed of parasitic worms by their hosts. Huxley.
Heterogenesis.
It looked exceedingly like a case of Abiogenesis, or, at any rate, of Xenogenesis and it is only quite recently that the real course of events has been made out. "Aphorisms and Reflections from the works of T. H. Huxley", Thomas Henry Huxley.
It looked exceedingly like a case of Abiogenesis, or, at any rate, of Xenogenesis and it is only quite recently that the real course of events has been made out.
That which happens: an unforeseen or unexpected event: chance: an unessential quality or property. ...