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gamete |
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gamete [ˈgæmiːt gəˈmiːt] n (Life Sciences & Allied Applications / Biology) a haploid germ cell, such as a spermatozoon or ovum, that fuses with another germ cell during fertilization [from New Latin, from Greek gametē wife, from gamos marriage] gametal , gametic [gəˈmɛtɪk] adj
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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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