Nondisjunction

Definition

Nondisjunction occurs when chromosomes fail to separate properly during meiosis, resulting in gametes with an abnormal number of chromosomes.

Related terms

Trisomy 21 (Down Syndrome):

A condition caused by nondisjunction where an individual has three copies of chromosome 21 instead of two. It’s like getting an extra cookie – sounds fun initially but can lead to complications.

Monosomy: This is when a cell has only one copy of a chromosome instead of the usual pair. It's like missing a cookie – you're left wanting more.

Polyploidy:

A condition where an organism has more than two complete sets of chromosomes due to nondisjunction. Imagine having multiple boxes of cookies instead of just one.