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gamete |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.21 sec. |
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gamete /gam·ete/ (gam´ēt) 1. one of two haploid reproductive cells, male (spermatozoon) and female (oocyte), whose union is necessary in sexual reproduction to initiate the development of a new individual. 2. the malarial parasite in its sexual form in a mosquito's stomach, either male (microgamete) or female (macrogamete); the latter is fertilized by the former to develop into an ookinete.gamet´ic
Gamete An egg (ovum) from the female or a mature sperm from the male. Mentioned in: Infertility Therapies gamete [gam′ēt] Etymology: Gk, marriage partner 1 a mature male or female germ cell that is capable of functioning in fertilization or conjugation and contains the haploid number of chromosomes of the organism. 2 an ovum or a spermatozoon. See also meiosis. gametic, adj. gamete a haploid germ cell; one of two cells, male (spermatozoon) and female (ovum), whose union is necessary in sexual reproduction to initiate the development of a new individual. gamete Genetics A mature ♀ or ♂ reproductive cell–sperm or ovum/egg with a haploid set of chromosomes–23 for humans. See Chromosome, Haploid, Macrogamete, Microgamete, Nullisomic gamete. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In 2000, he came up with the novel idea of replacing the test tube used for in vitro fertilisation by a permeable capsule, inserted in the mother's uterus, so that gametes (spermatozoa, ovules) and/or embryos would develop under more natural conditions, in vivo. IVF is of two kinds: heterologous, fusion of gametes of at least one donor other than the married spouses, and homologous, IVF between husband and wife. Among the animals that are simultaneously male and female, Michiels distinguishes between hermaphrodites where partners make contact to achieve internal fertilization and those in which at least one of the partners releases a cloud of gametes, so the partners don't themselves make physical contact. |
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