Missing one chromosome from a pair. For example, if a female has one X chromosome (X monosomy) rather than two, Turner syndrome is the result.
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Absence of one chromosome of a pair of homologous chromosomes. SEE ALSO: chromosomal deletion. [see monosome]

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a condition in which there is one chromosome missing from the normal (diploid) set. Compare trisomy.
monosomic adj.

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mono·so·my (monґo-so″me) absence of one chromosome of a homologous pair in the complement of an otherwise diploid cell (2n−1), as seen in Turner syndrome and various other conditions. monosomic adj

Medical dictionary. 2011.

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  • monosomy — noun see monosomic …   New Collegiate Dictionary

  • monosomy — Situation in a normally diploid cell or organism in which one or more of the homologous chromosome pairs is represented by only one chromosome of the pair. For example, sex determination in grasshoppers depends on the fact that females are XX and …   Dictionary of molecular biology

  • monosomy — See monosomic. * * * …   Universalium

  • monosomy — noun A genetic disorder with the presence of only one chromosome (instead of the typical two in humans) from a pair. See Also: aneuploidy …   Wiktionary

  • monosomy — n. having only one copy of a particular chromosome instead of the normal two copies …   English contemporary dictionary

  • monosomy — [ˌmɒnə(ʊ) səʊmi] noun Biology the condition of having a diploid chromosome complement in which one (usually the X) chromosome lacks its homologous partner. Derivatives monosomic adjective …   English new terms dictionary

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