nondisjunction
Americannoun
noun
Etymology
Origin of nondisjunction
First recorded in 1910–15; non- + disjunction
Vocabulary lists containing nondisjunction
Genetics - Middle School
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Genetics - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The M checkpoint ensures the proper duplication of DNA and if it fails, the cells may undergo nondisjunction of chromosomes.
From Textbooks • Jun. 9, 2022
They are caused by nondisjunction, which occurs when pairs of homologous chromosomes or sister chromatids fail to separate during meiosis.
From Textbooks • Jun. 9, 2022
In males, nondisjunction may cause Klinefelter’s syndrome, resulting from the inheritance of an extra X chromosome.
From Textbooks • Jan. 1, 2018
Aneuploidy results when the gametes have too many or too few chromosomes due to nondisjunction during meiosis.
From Textbooks • Jan. 1, 2015
The frequency of nondisjunction events appears to increase with age, so the frequency of bearing a child with Down syndrome increases in women over 36.
From Textbooks • Jun. 19, 2013
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
