Nondisjunction vs. Disjunction — What's the Difference?

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.

The act of disjoining or the condition of being disjointed.

The failure of paired chromosomes or sister chromatids to separate and go to different cells during meiosis.

See exclusive disjunction.

(genetics) The failure of chromosome dyads or tetrads to separate properly during meiosis or mitosis.

See inclusive disjunction.

Meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells

(Genetics) The separation of homologous chromosomes during meiosis.

The act of disjoining; disunion, separation.

The state of being disjoined, contrasting, or opposing.

(logic) The proposition resulting from the combination of two or more propositions using the or operator.

(mathematics) A logical operator that results in “true” when some of its operands are true.

(biology) During meiosis, the separation of chromosomes (homologous in meiosis I, and sister chromatids in meiosis II).

The act of disjoining; disunion; separation; a parting; as, the disjunction of soul and body.

A disjunctive proposition.

State of being disconnected

The act of breaking a connection