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Term Information

sexual reproduction
Alternate IDs
A type of reproduction that combines the genetic material of two gametes (such as a sperm or egg cell or fungal spores). The gametes have an haploid genome (with a single set of chromosomes, the product of a meiotic division) and combines with one another to produce a zygote (diploid). Source: Wikipedia:Sexual_reproduction, Wikipedia:Sexual_reproduction
Note that gametes may come from two organisms or from a single organism in the case of self-fertilizing hermaphrodites, e.g. C. elegans, or self-fertilization in plants. Note also that sexual reproduction may be seen as 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.
See term history for GO:0019953 at QuickGO
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Graph of GO:0019953

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Parents of sexual reproduction (GO:0019953)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
sexual reproduction [is_a relation] is_a  reproduction (GO:0000003)
Children of sexual reproduction (GO:0019953)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
gamete generation (GO:0007276) [BFO:0000050 relation] BFO:0000050  sexual reproduction
sporocarp development involved in sexual reproduction (GO:0000909) [BFO:0000050 relation] BFO:0000050  sexual reproduction
mating (GO:0007618) [BFO:0000050 relation] BFO:0000050  sexual reproduction
conjugation with cellular fusion (GO:0000747) [is_a relation] is_a  sexual reproduction
conjugation with mutual genetic exchange (GO:0000748) [is_a relation] is_a  sexual reproduction
meiotic cell cycle (GO:0051321) [BFO:0000050 relation] BFO:0000050  sexual reproduction
fertilization (GO:0009566) [BFO:0000050 relation] BFO:0000050  sexual reproduction