nondisjunction
[ non-dis-juhngk-shuh n ]
/ ˌnɒn dɪsˈdʒʌŋk ʃən /
noun Biology.
the failure of chromosomes to separate and segregate into daughter cells at division.
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Origin of nondisjunction
First recorded in 1910–15; non- + disjunction
Words nearby nondisjunction
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for non-disjunction
Non-disjunction as proof of the chromosome theory of heredity.
Sex-linked Inheritance in Drosophila|Thomas Hunt Morgan
British Dictionary definitions for non-disjunction
nondisjunction
/ (ˌnɒndɪsˈdʒʌŋkʃən) /
noun
the failure of paired homologous chromosomes to move to opposite poles of the cell during meiosis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Medical definitions for non-disjunction
nondisjunction
[ nŏn′dĭs-jŭngk′shən ]
n.
The failure of one or more pairs of chromosomes to separate at the miotic stage of karyokinesis, with the result that both chromosomes are carried to one daughter cell and none to the other.
Other words from nondisjunction
non′dis•junc′tion•al adj.The American Heritage® Stedman's Medical Dictionary
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