Non-disjunction

Link your page to this one if your genetic disorder is a result of non-disjunction.

Non-disjunction is the process by which chromosomes fail to separate properly during meiosis. It can occur in meiosis I or meiosis II. Either will result in an extra or missing chromosome in the gametes produced. Certain genetic disorders may result if a gamete from non-disjunction is fertilized. The disorder caused depends on which chromosome is affected.