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GO_term: GO:0019953   

GO:0019953 Definition The regular alternation, in the life cycle of haplontic, diplontic and diplohaplontic organisms, of meiosis and fertilization which provides for the production of offspring. In diplontic organisms there is a life cycle in which the products of meiosis behave directly as gametes, fusing to form a zygote from which the diploid, or sexually reproductive polyploid, adult organism will develop. In diplohaplontic organisms a haploid phase (gametophyte) exists in the life cycle between meiosis and fertilization (e. g. higher plants, many algae and fungi); the products of meiosis are spores that develop as haploid individuals from which haploid gametes develop to form a diploid zygote; diplohaplontic organisms show an alternation of haploid and diploid generations. In haplontic organisms meiosis occurs in the zygote, giving rise to four haploid cells (e. g. many algae and protozoa), only the zygote is diploid and this may form a resistant spore, tiding organisms over hard times.
The regular alternation, in the life cycle of haplontic, diplontic and diplohaplontic organisms, of meiosis and fertilization which provides for the production offspring. In diplontic organisms there is a life cycle in which the products of meiosis behave directly as gametes, fusing to form a zygote from which the diploid, or sexually reproductive polyploid, adult organism will develop. In diplohaplontic organisms a haploid phase (gametophyte) exists in the life cycle between meiosis and fertilization (e.g. higher plants, many algae and fungi); the products of meiosis are spores that develop as haploid individuals from which haploid gametes develop to form a diploid zygote; diplohaplontic organisms show an alternation of haploid and diploid generations. In haplontic organisms meiosis occurs in the zygote, giving rise to four haploid cells (e.g. many algae and protozoa), only the zygote is diploid and this may form a resistant spore, tiding organisms over hard times.
Termsexual reproduction
TypeBiological_process
Child Instance GO:0000747
GO:0000748
GO:0000909
GO:0007276
GO:0007322
GO:0007333
GO:0009566
GO:0048236
GO:0030461
GO:0030477
GO:0048229
ParentInstance_ofGO:0000003
Attributes_of Motif INTERPRO:IPR005795
INTERPRO:IPR008836
INTERPRO:IPR006742
INTERPRO:IPR007689
Index Ancestor (26)
Descendent (290)