| GO term: | sexual reproduction |
| GO id: | 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 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. |
| Number of paths to term: | 1 |
denotes an 'is-a' relationship
denotes a 'part-of' relationship
denotes a 'regulates' relationship
denotes a 'positively-regulates' relationship
denotes a 'negatively-regulates' relationship
biological_processreproductionasexual reproduction +cellular process involved in reproduction +multicellular organism reproduction +reproduction of a single-celled organism +reproductive process +sexual reproduction [GO:0019953] (520 genes, 777 annotations)conjugation with cellular fusion +fertilization +gamete generation +sexual sporulation +sporocarp development involved in sexual reproduction +Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc |
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last database update 05/08/2013 MGI 5.13 |
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