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The process, occurring above the cellular level, that is pertinent to the reproductive function of a multicellular organism. This includes the integrated processes at the level of tissues and organs. 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. The complete process of formation and maturation of an ovum or female gamete from a primordial female germ cell. Examples of this process are found in Mus musculus and Drosophila melanogaster. The generation and maintenance of gametes in a multicellular organism. A gamete is a haploid reproductive cell. Formation of a single follicular epithelium around the germ-line derived cells of a cyst formed in the female gonad. Generation of the female gamete; specialised haploid cells produced by meiosis and along with a male gamete takes part in sexual reproduction. The release of a mature ovum/oocyte from an ovary. The process whereby an uncellularized embryo sac nucleus cellularizes and acquires the specialized features of an egg cell. An example of this process is found in Arabidopsis thaliana. The production of yolk. Yolk is a mixture of materials used for embryonic nutrition.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: female gamete generation
Acc: GO:0007292
Aspect: Biological Process
Desc: Generation of the female gamete; specialised haploid cells produced by meiosis and along with a male gamete takes part in sexual reproduction.
Proteins in PDR annotated with:
   This term: 10 [Search]
   Term or descendants: 1022 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0007292 - female gamete generation (interactive image map)
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