n. 自然发生, 世代交替, 亲子异型

[医] 世代交替, 异配生殖, 亲子异形

[ noun ]
the alternation of two or more different forms in the life cycle of a plant or animal
<noun.phenomenon>

Xenogenesis \Xen`o*gen"e*sis\, n. [Gr. xe`nos a stranger + E.
genesis.] (Biol.)
(a) Same as {Heterogenesis}.
(b) The fancied production of an organism of one kind by an
organism of another. --Huxley.