Fertilization of the eggs

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• fertilization membrane — n a resistant membranous layer in eggs of many animals that forms following fertilization by the thickening and separation of the vitelline membrane from the cell surface and that prevents multiple fertilization * * * a strong membrane formed… …   Medical dictionary

• fertilization — fertilizational, adj. /ferr tl euh zay sheuhn/, n. 1. an act, process, or instance of fertilizing. 2. the state of being fertilized. 3. Biol. a. the union of male and female gametic nuclei. b. fecundation or impregnation of animals or plants. 4.… …   Universalium

• fertilization membrane — noun Date: 1931 a resistant membranous layer in eggs of many animals that forms following fertilization by the thickening and separation of the vitelline membrane from the cell surface and that prevents multiple fertilization …   New Collegiate Dictionary

• The Johnsons — De Johnsons Directed by Rudolf van den Berg Written by Roy Frumkes, Rocco Simonelli …   Wikipedia

• fertilization membrane — noun the membrane that forms around a fertilized ovum and prevents penetration by additional spermatozoon • Hypernyms: ↑membrane, ↑tissue layer * * * noun : a resistant membranous layer that separates from the surface of many eggs immediately… …   Useful english dictionary

• in vitro fertilization — a specialized technique by which an ovum, esp. a human one, is fertilized by sperm outside the body, with the resulting embryo later implanted in the uterus for gestation. [1970 75] * * * ▪ medicine Introduction also called  test tube conception  …   Universalium

• External fertilization — is a form of fertilization in which a zilo cell is united with an egg cell external to the body of the female. Thus, the fertilization is said to occur externally . This is distinct from internal fertilization where the union of the egg and sperm …   Wikipedia

• Internal fertilization — is a form of animal fertilization of an ovum by spermatozoon within the body of an inseminated animal, whether female or hermaphroditic. This is distinct from external fertilization, where the union of the ova and spermatoza occur outside of the… …   Wikipedia

• cross-fertilization — /kraws ferr tl euh zay sheuhn, kros /, n. 1. Biol. the fertilization of an organism by the fusion of an egg from one individual with a sperm or male gamete from a different individual. 2. Bot. fertilization of the flower of one plant by a gamete… …   Universalium

• Land of the Lost (1974 TV series) characters and species — Land of the Lost was a 1974 ndash;1976 TV series relating the adventures of the Marshall family (including Will and Holly and their father, later replaced by their uncle). The Marshalls become trapped in a pocket universe populated by dinosaurs,… …   Wikipedia

• par´the|no|ge|net´i|cal|ly — par|the|no|ge|net|ic «PAR thuh noh juh NEHT ihk», adjective. having to do with or exhibiting the phenomenon of parthenogenesis: »Parthenogenetic development has been induced in the eggs of a number of animals which ordinarily require… …   Useful english dictionary