/bak"kraws', -kros'/, Genetics.
1. to cross (a hybrid of the first generation) with either of its parents.
2. an instance of such crossing.
[1900-05; BACK2 + CROSS]

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      the mating of a hybrid organism (offspring of genetically unlike parents) with one of its parents or with an organism genetically similar to the parent. The backcross is useful in genetics studies for isolating (separating out) certain characteristics in a related group of animals or plants. In animal breeding, a backcross is often called a topcross. Grading usually refers to the mating of average, or “grade,” females to a superior male, then backcrossing the female offspring to the same or a similar sire.

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Universalium. 2010.

Look at other dictionaries:

  • backcross — backcross. См. возвратное скрещивание. (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.

  • backcross — ● backcross nom masculin (mot anglais, de back, en arrière, et cross, croisement) Accouplement d un hybride avec l un de ses parents …   Encyclopédie Universelle

  • backcross — [bak′krôs΄] vt., vi. to cross, or breed (a hybrid) with one of its parents or with a genetic equivalent to such a parent n. an instance or result of such a breeding …   English World dictionary

  • backcross — Crossing an individual with one of its parents or with the genetically equivalent organism. The offspring of such a cross are referred to as the backcross generation or backcross progeny …   Glossary of Biotechnology

  • backcross — 1. Mating of an individual heterozygous at one or more loci to an individual homozygous at the same loci. 2. SYN: testcross. * * * back·cross bak .krȯs vt to cross (a first generation hybrid) with one of the parental types backcross n a mating… …   Medical dictionary

  • backcross — grįžtamasis kryžminimas statusas T sritis augalininkystė apibrėžtis Porinis kryžminimas, kurį taikant gautieji hibridai vėl kryžminami su viena iš tėvinių formų. atitikmenys: angl. backcross rus. возвратное скрещивание ryšiai: sinonimas –… …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • backcross — I. transitive verb Date: 1904 to cross (a first generation hybrid) with one of the parental types II. noun Date: 1918 a mating that involves backcrossing; also an individual produced by backcrossing …   New Collegiate Dictionary

  • backcross — 1. verb To cross a hybrid with one of its parents 2. noun a) The act of such a crossing b) An individual produced by such a crossing …   Wiktionary

  • backcross — BACK CROSS /béc cros/ s. n. (biol.) Încrucişare a unui hibrid cu unul dintre părinţi. (<engl. back cross) Trimis de raduborza, 13.09.2007. Sursa: MDN  BACK CROSS BÉC CROS/ s. n. (biol.) încrucişare a unui hibrid cu unul dintre părinţi. (<… …   Dicționar Român

  • backcross — n. cross breeding, hybridization …   English contemporary dictionary

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