nondisjunction(redirected from Non-disjunctions)
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The failure of paired chromosomes or sister chromatids to separate and go to different cells during meiosis.
(Genetics) the failure of paired homologous chromosomes to move to opposite poles of the cell during meiosis
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|Noun||1.||nondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells|