chromosome aberrations

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• chromosome aberration — an irregularity in the number or structure of chromosomes that may alter the course of development of the embryo, usually in the form of a gain (duplication), loss (deletion), exchange (translocation), or alteration in sequence (inversion) of… …   Medical dictionary

• Chromosome acrocentrique — Chromosome Description de la structure d’un chromosome. Le chromosome est l élement porteur de l information génétique. Les chromosomes contiennent les gènes et permettent leur distribution égale dans les deux cellules filles lors de la division… …   Wikipédia en Français

• Chromosome — For a non technical introduction to the topic, see Introduction to genetics. Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2)… …   Wikipedia

• Chromosome — Description de la structure d’un chromosome. Un chromosome est un élément microscopique constitué de molécules d ADN. Dans les cellules eucaryotes, les chromosomes se trouvent dans le noyau où ils prennent la forme soit d un bâtonnet, soit d un… …   Wikipédia en Français

• Chromosome microdissection — Left panels show metaphase chromosomes before microdissection (top) and after a chromosomal band is removed (bottom). Right panels show an illustration of the same information for clarity. Chromosome microdissection is a technique that physically …   Wikipedia

• Derivative chromosome — A derivative chromosome (der) is a structurally rearranged chromosome generated either by a rearrangement involving two or more chromosomes or by multiple aberrations within a single chromosome (e.g. an inversion and a deletion of the same… …   Wikipedia

• Somatic evolution in cancer — Somatic evolution is the accumulation of mutations in the cells of a body (the soma) during a lifetime, and the effects of those mutations on the fitness of those cells. Somatic evolution is important in the process of aging as well as the… …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Chernobyl disaster effects — The Chernobyl disaster triggered the release of substantial amounts of radiation into the atmosphere in the form of both particulate and gaseous radioisotopes. It is the most significant unintentional release of radiation into the environment to… …   Wikipedia

• Karyotype — A karyotype is the number and appearance of chromosomes in the nucleus of an eukaryotic cell. The term is also used for the complete set of chromosomes in a species, or an individual organism.[1][2]p28[3] Karyotypes describe the number of… …   Wikipedia

• Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster …   Wikipedia