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alternation of generations

/ˌɔːltəˈneɪʃən əv ˌdʒɛnəˈreɪʃənz/

翻译: 生物学术语,指某些植物和藻类的生命周期中,多细胞的单倍体配子体世代与多细胞的二倍体孢子体世代交替出现的现象。

1 个条目

phrase

/ˌɔːltəˈneɪʃən əv ˌdʒɛnəˈreɪʃənz/C1formalscientific
  • zh生物学术语,指某些植物和藻类的生命周期中,多细胞的单倍体配子体世代与多细胞的二倍体孢子体世代交替出现的现象。

A biological term describing the life cycle of certain plants and algae, where a multicellular haploid gametophyte generation alternates with a multicellular diploid sporophyte generation.

  1. Life cycle in plants and algaeC2formal

    A reproductive cycle in which a multicellular haploid phase (gametophyte) alternates with a multicellular diploid phase (sporophyte).

    zh世代交替

    • Mosses exhibit alternation of generations, with the gametophyte being the dominant stage.
    • In ferns, the sporophyte is the familiar plant, while the gametophyte is a small, heart-shaped structure.
    • Alternation of generations is a key characteristic of all land plants and some algae.