polyembryony


polyembryony
/pol'ee em"bree euh nee, -oh'nee, -em bruy"euh nee/, n. Embryol.
the production of more than one embryo from one egg.
[1840-50; POLY- + Gk émbryon EMBRYO + -Y3]

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      a condition in which two or more embryos develop from a single fertilized egg, forming what in humans is known as identical twins. A common phenomenon in many plant and animal species, polyembryony occurs regularly in the nine-banded armadillo, which usually gives birth to four identical young. Striking examples may be found among parasitic insects of the order Hymenoptera; Copidosoma truncatellum, a parasite of certain cutworms, lays a single egg in the body of the host worm from which may develop as many as 2,000 individuals.

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Universalium. 2010.

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  • Polyembryony — is the phenomenon of two or more embryos developing from a single fertilized egg (in humans, identical twins). Polyembryony occurs regularly in many plants and animals.The nine banded armadillo, for instance usually gives birth to four identical… …   Wikipedia

  • Polyembryony — Pol y*em bry*o*ny, n. [See {Poly }, and {Embryo}.] (Bot.) The production of two or more embryos in one seed, due either to the existence and fertilization of more than one embryonic sac or to the origination of embryos outside of the embryonic… …   The Collaborative International Dictionary of English

  • polyembryony — polyembryony. См. полиэмбриония. (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.

  • polyembryony — [päl΄ē em′brē ə nē] n. [< POLY + EMBRYO + Y4] the production of two or more embryos or individuals from a single fertilized ovum …   English World dictionary

  • polyembryony — poliembrionija statusas T sritis augalininkystė apibrėžtis Dviejų arba kelių gemalų susidarymas vienoje sėkloje. atitikmenys: angl. polyembryony rus. полиэмбриония …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • polyembryony — noun Etymology: International Scientific Vocabulary poly + embryon + 2 y Date: 1849 1. the condition of having several embryos 2. the production of two or more embryos from one ovule or egg • polyembryonic adjective …   New Collegiate Dictionary

  • polyembryony — n. [Gr. polys, many; embryon, fetus] The formation of multiple embryos from a single egg; polyembryonic adj …   Dictionary of invertebrate zoology

  • polyembryony — noun The production of two or more embryos in one seed, due either to the existence and fertilization of more than one embryonic sac or to the origination of embryos outside of the embryonic sac …   Wiktionary

  • polyembryony — Condition of a zygote s giving rise to two or more embryos. [poly + G. embryon, embryo] * * * poly·em·bry·o·ny em brē ə nē, (.)em brī n, pl nies the production of two or more embryos from one ovule or egg poly·em·bry·on·ic .em brē än ik adj * * * …   Medical dictionary

  • polyembryony — n. formation of more than one embryo from a single egg (Embryology) …   English contemporary dictionary