nondisjunction
noun
non·dis·junc·tion
ˌnän-dis-ˈjəŋ(k)-shən 
: failure of homologous chromosomes or sister chromatids to separate subsequent to metaphase in meiosis or mitosis so that one daughter cell has both and the other neither of the chromosomes
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“Nondisjunction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nondisjunction. Accessed 15 Jul. 2025.
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nondisjunction
noun
non·dis·junc·tion
ˌnän-dis-ˈjəŋ(k)-shən
: failure of homologous chromosomes or sister chromatids to separate subsequent to metaphase in meiosis or mitosis so that one daughter cell has both and the other neither of the chromosomes
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