Each of the two strands formed by longitudinal duplication of a chromosome that becomes visible during prophase of mitosis or meiosis; the two chromatids are joined by the still undivided centromere; after the centromere has divided at metaphase and the two chromatids have separated, each c. becomes a chromosome. [G. chroma, color, + -id (2),]

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chro·ma·tid 'krō-mə-təd n one of the usu. paired and parallel strands of a duplicated chromosome joined by a single centromere see CHROMONEMA

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one of the two threadlike strands formed by longitudinal division of a chromosome during mitosis and meiosis. They remain attached at the centromere. Chromatids can be seen between early prophase and metaphase in mitosis and between diplotene and the second metaphase of meiosis, after which they divide at the centromere to form daughter chromosomes.

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chro·ma·tid (kroґmə-tid) one of the paired daughter strands, joined at the centromere, which make up a chromosome after it has replicated, each strand containing a single DNA double helix. After division of the centromere in mitosis or meiosis, each one of the pair becomes a separate chromosome.

Medical dictionary. 2011.

Look at other dictionaries:

  • chromatid — n. (Cell Biol.) one of two identical strands into which a chromosome splits during mitosis. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • chromatid — chromatid. См. полухромосома. (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.

  • chromatid — [krō′mə tid΄] n. any of the structures into which a chromosome divides during mitosis or meiosis …   English World dictionary

  • Chromatid — Schematische Darstellung eines Metaphase Chromosoms. Es besteht aus zwei Chromatiden (das rechte mit (1) bezeichnet), die am Centromer (2) zusammenhängen. Der kurze (3) und lange Arm (4) des rechten Chromatids ist ebenfalls gekennzeichnet. Der… …   Deutsch Wikipedia

  • Chromatid — Chromosomal components: (1) Chromatid (2) Centromere (3) Short arm (4) Long arm A chromatid is one of the two identical copies of DNA making up a duplicated chromosome, which are joined at their centromeres, for the process of cell division… …   Wikipedia

  • chromatid — chromatidė statusas T sritis augalininkystė apibrėžtis Viena iš dviejų funkcinių chromosomos dalių, gerai matomų profazės ir metafazės metu, o anafazės stadijoje tampančių savarankiškomis chromosomomis. atitikmenys: angl. chromatid rus. хроматида …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • chromatid — noun Date: 1900 one of the usually paired and parallel strands of a duplicated chromosome joined by a single centromere …   New Collegiate Dictionary

  • chromatid — n. [Gr. chroma, color] One of two spiral filaments that make up a chromosome, and separate in cell division, each going to a different pole of the dividing cell and each becoming a daughter chromosome at anaphase in mitosis …   Dictionary of invertebrate zoology

  • chromatid — Single chromosome containing only one DNA duplex. Two daughter chromatids become visible at mitotic metaphase, though they are present throughout G2 …   Dictionary of molecular biology

  • chromatid — /kroh meuh tid/, n. Genetics. one of two identical chromosomal strands into which a chromosome splits longitudinally preparatory to cell division. [1895 1900; CHROMAT + ID3] * * * …   Universalium

  • chromatid — noun Either of the two strands of a chromosome that separate during mitosis …   Wiktionary