holoblastic cleavage

holoblastic cleavage
holoblastic cleavage.
(Источник: «Англо-русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд-во ВНИРО, 1995 г.)

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Смотреть что такое "holoblastic cleavage" в других словарях:

  • holoblastic cleavage — division of the zygote in which the entire cell participates in division; subclassified as equal or unequal depending on whether the resulting blastomeres are all of the same size. Called also complete or total c …   Medical dictionary

  • Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …   Wikipedia

  • holoblastic — Denoting the involvement of the entire (isolecithal or moderately telolecithal) ovum in cleavage. [holo + G. blastos, germ] * * * ho·lo·blas·tic .hō lə blas tik, .häl ə adj characterized by cleavage planes that divide the whole egg into distinct… …   Medical dictionary

  • holoblastic — [häl΄ō blas′tik, hō΄lōblas′tik] adj. [ HOLO + BLAST + IC] Embryology undergoing complete cleavage into daughter cells: said of certain ova with little yolk ( blastomeres): cf. MEROBLASTIC …   English World dictionary

  • cleavage — 1. Series of mitotic cell divisions occurring in the ovum immediately following its fertilization. SYN: segmentation (2). SEE ALSO: c. division. 2. Splitting of a complex molecule into two or more simpler molecules. SYN: scission (2). 3 …   Medical dictionary

  • cleavage — /klee vij/, n. 1. the act of cleaving or splitting. 2. the state of being cleft. 3. the area between a woman s breasts, esp. when revealed by a low cut neckline. 4. a critical division in opinion, beliefs, interests, etc., as leading to… …   Universalium

  • holoblastic — adjective Etymology: International Scientific Vocabulary Date: 1872 characterized by complete cleavage that divides the whole egg into distinct and separate blastomeres compare meroblastic …   New Collegiate Dictionary

  • holoblastic — an egg, the whole of which undergoes cleavage, usually those with little yolk, e.g. Amphioxi, Petromyzontiformes, Acipenseridae, Amiidae, Lepisosteidae …   Dictionary of ichthyology

  • holoblastic division — The type of cleavage in which the entire egg cell is divided …   Dictionary of invertebrate zoology

  • holoblastic — holoblastically, adv. /hol euh blas tik, hoh leuh /, adj. Embryol. (of certain eggs) undergoing total cleavage, resulting in equal blastomeres. Cf. meroblastic. [1870 75; holoblast (HOLO + BLAST) + IC] * * * …   Universalium


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