mosaicism

mosaicism
Condition of being mosaic (2).
- cellular m. a chimerism in which a tissue contains cells from different zygotes; e.g., in humans, involving erythrocytes.
- chromosome m. mosaic (2).
- gene m. mosaic (2).
- germinal m., gonadal m. a state in which some of the germ cells of the gonad are of a form not present in either parent, because of mutation in an intermediate progenitor of these cells.

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mo·sa·i·cism mō-'zā-ə-.siz-əm n the condition of possessing cells of two or more different genetic constitutions

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n.
a condition in which the cells of an individual do not all contain identical chromosomes; there may be two or more genetically different populations of cells. Often one of the cell populations is normal and the other carries a chromosome defect such as Down's syndrome or Turner's syndrome. In affected individuals the chromosome defect is usually not fully expressed.
mosaic adj.

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mo·sa·i·cism (mo-zaґĭ-siz″əm) in genetics, the presence in an individual of two or more cell lines that are karyotypically or genotypically distinct and are derived from a single zygote. Cf. chimerism.

Medical dictionary. 2011.

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Look at other dictionaries:

  • mosaicism — mosaicism. См. мозаицизм. (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.

  • mosaicism — [mō zā′i siz΄əm] n. [ MOSAIC, n. 5 + ISM] the condition existing when tissues of different genetic makeup occur in the same organism …   English World dictionary

  • mosaicism — noun Date: 1926 the condition of possessing cells of two or more different genetic constitutions …   New Collegiate Dictionary

  • mosaicism — /moh zay euh siz euhm/, n. Biol. a condition in which an organism or part is composed of two or more genetically distinct tissues owing to experimental manipulation or to faulty distribution of genetic material during mitosis. [1925 30; MOSAIC +… …   Universalium

  • mosaicism — noun the condition in which more than one genetically distinct population of cells coexist within one individual See Also: mosaic …   Wiktionary

  • mosaicism — n. condition in which an organism contains two distinctly different genetic tissues (Biology) …   English contemporary dictionary

  • mosaicism — [məʊ zeɪɪsɪz(ə)m] noun Biology the property or state of being composed of cells of two genetically different types …   English new terms dictionary

  • mosaicism — mo·sa·i·cism …   English syllables

  • mosaicism — n. a condition in which the cells of an individual do not all contain identical chromosomes; there may be two or more genetically different populations of cells. Often one of the cell populations is normal and the other carries a chromosome… …   The new mediacal dictionary

  • mosaicism — mo•sa•i•cism [[t]moʊˈzeɪ əˌsɪz əm[/t]] n. dvl a condition in which an organism or part is composed of two or more genetically distinct tissues …   From formal English to slang

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