male pronucleus

male pronucleus
male pronucleus n the nucleus that remains in a male gamete after the meiotic reduction division and that contains only one half of the number of chromosomes characteristic of its species compare FEMALE PRONUCLEUS

* * *

the haploid nucleus of the spermatozoon after it has penetrated the oocyte.

Medical dictionary. 2011.

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  • male pronucleus — male pronucleus. См. мужской пронуклеус. (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.

  • male pronucleus — noun : the nucleus that remains in a male gamete after reduction and that contains only one half of the number of chromosomes characteristic of its species compare female pronucleus …   Useful english dictionary

  • Pronucleus — Pro*nu cle*us, n.; pl. {Pronuclei} ( [imac]). [NL. See {Pro }, and {Nucleus}.] (Biol.) One of the two bodies or nuclei (called male and female pronuclei) which unite to form the first segmentation nucleus of an impregnated ovum. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Pronucleus — A cell nucleus with a haploid set of chromosomes (23 chromosomes in humans) resulting from meiosis (germ cell division). The male pronucleus is the sperm nucleus after it has entered the ovum at fertilization but before fusion with the female… …   Medical dictionary

  • pronucleus — Haploid nucleus resulting from meiosis. In animals the female pronucleus is the nucleus of the ovum before fusion with the male pronucleus. The male pronucleus is the sperm nucleus after it has entered the ovum at fertilization but before fusion… …   Dictionary of molecular biology

  • pronucléus — [ pronykleys ] n. m. • 1875; de pro et nucléus ♦ Biol. Noyau haploïde d un œuf fécondé. Pronucléus mâle, femelle. ● pronucléus nom masculin Noyau du spermatozoïde (pronucléus mâle) ou de l ovule (pronucléus femelle). pronucléus [pʀonykleys] n. m …   Encyclopédie Universelle

  • pronucleus — noun Etymology: New Latin Date: 1880 the haploid nucleus of a male or female gamete (as an egg or sperm) up to the time of fusion with that of another gamete in fertilization …   New Collegiate Dictionary

  • female pronucleus — n the nucleus that remains in a female gamete after the meiotic reduction division and extrusion of polar bodies and contains only one half the number of chromosomes characteristic of its species compare MALE PRONUCLEUS * * * the haploid nucleus… …   Medical dictionary

  • female pronucleus — noun : the nucleus that remains in a female gamete after reduction and extrusion of polar bodies and that contains only one half of the number of chromosomes characteristic of its species compare male pronucleus …   Useful english dictionary

  • Pronuclei — Pronucleus Pro*nu cle*us, n.; pl. {Pronuclei} ( [imac]). [NL. See {Pro }, and {Nucleus}.] (Biol.) One of the two bodies or nuclei (called male and female pronuclei) which unite to form the first segmentation nucleus of an impregnated ovum. [1913… …   The Collaborative International Dictionary of English

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