| 单词 | alternation of generations |
| 释义 | alternation of generations in British Englishnoun 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, xenogenesisalternation of generations in American English the regular alternation of two distinct body forms in the life cycle of a plant or animal, usually an alternation betweena form that reproduces sexually and one that reproduces asexually |
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