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Characterized by the alternation of sexual and parthenogenic generations.
1. (Biology) biology the alternation of parthenogenetic and sexual generations in rotifers and similar animals
2. (Botany) the condition in plants, such as the primrose, of having flowers that differ from each other in the length of their stamens and styles. Compare homogony
alterna′tion of genera′tions
the alternation in an organism's life cycle of dissimilar reproductive forms, esp. the alternation of sexual with asexual generations.