The failure of sister chromatids to separate during meiosis is called
A) synapsis.
B) crossing-over.
C) tetrad formation.
D) disjunction.
E) nondisjunction.

Question

Quizplus · Accepted Answer

Nondisjunction is the failure of sister chromatids (or homologous chromosomes) to separate properly during cell division, which can occur in meiosis or mitosis. This can lead to gametes with an abnormal number of chromosomes.

The Failure of Sister Chromatids to Separate During Meiosis Is