- animal pole
In most animal oocytes the nucleus is not centrally placed and its position can be used to define two poles. That nearest to the nucleus is the animal pole, and the other is the vegetal pole, with the animal-vegetal axis between the poles passing through the nucleus. During meiosis of the oocyte the polar bodies are expelled at the animal pole. In many eggs there is also a graded distribution of substances along this axis, with pigment granules often concentrated in the animal half and yolk, where present, largely in the vegetal half.
Dictionary of molecular biology. 2004.
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animal pole — n the point on the surface of an egg that is diametrically opposite to the vegetal pole and usu. marks the most active part of the protoplasm or the part containing least yolk * * * 1. the site of an oocyte to which the nucleus is approximated,… … Medical dictionary
animal pole — animal pole. См. анимальный полюс. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Animal pole — In developmental biology, the term animal pole refers to the upper hemisphere of a blastula embryo (as it is conventionally drawn, in reality the animal pole may not be the upper hemisphere). The animal pole consists of small cells that divide… … Wikipedia
animal pole — an′imal pole n. dvl the formative part of an ovum, opposite the vegetal pole, that contains the nucleus and most cytoplasm • Etymology: 1885–90 … From formal English to slang
animal pole — noun Date: 1887 the point on the surface of an egg that is diametrically opposite to the vegetal pole and usually marks the most active part of the protoplasm or the part containing least yolk … New Collegiate Dictionary
animal pole — Biol. the formative part of an ovum, having the greatest amount of cytoplasm and containing the nucleus. Cf. vegetal pole. [1885 90] * * * … Universalium
animal pole — noun : the point on the surface of an egg marking the center of the most active part of the protoplasm or the part containing least yolk, being in most animals whose embryology has been studied the point where the polar bodies are segmented off… … Useful english dictionary
animal pole — the location on the fish egg where polar bodies emerge. It corresponds to the point of fertilisation just below where the sperm penetrates the chorion through the micropyle … Dictionary of ichthyology
pôle — [ pol ] n. m. • 1230; lat. polus, gr. polos, de polein « tourner » 1 ♦ Astron. Chacun des deux points de la sphère céleste formant les extrémités de l axe autour duquel elle semble tourner. « Le ciel paraît tourner sur deux points fixes, nommés… … Encyclopédie Universelle
pole — pole1 [pōl] n. [ME < OE pal < L palus, PALE2] 1. a long, slender piece of wood, metal, etc. usually rounded [a tent pole, flagpole, fishing pole] 2. a tapering wooden shaft extending from the front axle of a wagon or carriage and attached… … English World dictionary