<P> Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division . There are three forms of nondisjunction : failure of a pair of homologous chromosomes to separate in meiosis I , failure of sister chromatids to separate during meiosis II , and failure of sister chromatids to separate during mitosis . Nondisjunction results in daughter cells with abnormal chromosome numbers ( aneuploidy ) . </P>
<P> Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division . There are three forms of nondisjunction : failure of a pair of homologous chromosomes to separate in meiosis I , failure of sister chromatids to separate during meiosis II , and failure of sister chromatids to separate during mitosis . Nondisjunction results in daughter cells with abnormal chromosome numbers ( aneuploidy ) . </P>
failure of chromosome separation during meiosis is called
failure of chromosome separation during meiosis is called
Nondisjunction
Nondisjunction