alternation of generations

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alternation of generations

n.
The regular alternation of forms or of mode of reproduction in the life cycle of an organism, such as the alternation between diploid and haploid phases, or between sexual and asexual reproductive cycles.

alternation of generations

n
(Biology) the production within the life cycle of an organism of alternating asexual and sexual reproductive forms. It occurs in many plants and lower animals. Also called: metagenesis, heterogenesis, digenesis or xenogenesis

alterna′tion of genera′tions


n.
the alternation in an organism's life cycle of dissimilar reproductive forms, esp. the alternation of sexual with asexual generations.
[1855–60]

alternation of generations

A life cycle (e.g. mosses, ferns) in which a haploid generation alternates with a diploid generation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alternation of generations - the alternation of two or more different forms in the life cycle of a plant or animal
organic phenomenon - (biology) a natural phenomenon involving living plants and animals
digenesis, metagenesis - alternation of sexual and asexual generations
References in periodicals archive ?
He also said ''traditional friendship'' between the two countries ''will not change due to the change of time and alteration of generations.