In genetics, the alternation of gametophytic and sporophytic generations in the life cycle. The sporophyte develops from the zygote and produces spores. The gametophyte develops from the spore and produces gametes The cells of the sporophyte generation contain twice as many chromosomes as those of the gametophyte.
Reproduction in which a sexual generation alternates with an asexual generation, characteristic of some fungi and protozoa.