X chromosome
noun Date: 1911 a sex chromosome that usually occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes — compare Y chromosome

New Collegiate Dictionary. 2001.

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  • X chromosome — n a sex chromosome that usu. occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes compare Y CHROMOSOME * * * the sex chromosome present in both sexes. Women have two… …   Medical dictionary

  • X chromosome — ► NOUN Genetics ▪ (in humans and other mammals) a sex chromosome, two of which are normally present in female cells (designated XX) and only one in male cells (designated XY). Compare with Y CHROMOSOME(Cf. ↑Y chromosome) …   English terms dictionary

  • X chromosome — X chromosomes N COUNT An X chromosome is one of an identical pair of chromosomes found in a woman s cells, or one of a non identical pair found in a man s cells. X chromosomes are associated with female characteristics. Compare Y chromosome …   English dictionary

  • X-chromosome — X chro·mo·some or X chromosome (ĕksʹkrōʹmə sōm ) n. The sex chromosome associated with female characteristics in mammals, occurring paired in the female and single in the male. * * * …   Universalium

  • X chromosome — n. Genetics one of the sex chromosomes: see SEX CHROMOSOME …   English World dictionary

  • X chromosome — X chromosome. См. Х хромосома. (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.

  • X chromosome — Scheme of the X chromatid Nucleus of a female amniotic fluid cell. Top: Both X chro …   Wikipedia

  • X-chromosome — n. a sex chromosome of which the number in female cells is twice that in male cells. Etymology: X as an arbitrary label + CHROMOSOME * * * X body, X chromosome and X craft see under ↑X (symbol). Xˈ chromosome noun A chromosome associated with sex …   Useful english dictionary

  • X-chromosome — UK / US noun [countable] Word forms X chromosome : singular X chromosome plural X chromosomes biology a type of chromosome (= genetic material in a cell) that decides what sex a human or animal will be. In humans, females have two X chromosomes… …   English dictionary

  • X chromosome — Genetics. a sex chromosome of humans and most mammals that determines femaleness when paired with another X chromosome and that occurs singly in males. Cf. Y chromosome. [1910 15] * * * …   Universalium

  • X chromosome — X chro|mo|some [ˈeks ˌkrəuməsəum US ˌkrouməsoum] n a type of ↑chromosome that exists in pairs in female cells, and together with a ↑Y chromosome in male cells …   Dictionary of contemporary English

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