![Chromosome spread](/sites/default/files/media/images/2022-04/Chromosome%20spread_hero.png)
Aneuploidy
Definition
Aneuploidy is an abnormality in the number of chromosomes in a cell due to loss or duplication. In humans, aneuploidy would be any number of chromosomes other than the usual 46.
Narration
![Ebony B. Madden, Ph.D.](/sites/default/files/media/images/madden.png)
Ebony B. Madden, Ph.D.
Health Equity and Workforce Diversity Program Director
Training, Diversity and Health Equity Office