Main Content
Top of the page
Chromosomes are part of most types of cells in the body. Each chromosome has a single molecule of DNA.
Humans have 46 chromosomes (23 pairs). Half of a person's chromosomes come from the mother and half from the father. One of the 23 pairs are the sex chromosomes, X and Y. A female inherits an X chromosome from each birth parent (XX). A male inherits an X chromosome from their mother and a Y chromosome from their father (XY).
Changes in chromosomes can cause problems with how the body works. They can cause a genetic condition, such as Down syndrome.
Current as of: April 4, 2023
Author: Healthwise Staff
Medical Review:Adam Husney MD - Family Medicine & Kathleen Romito MD - Family Medicine & Martin J. Gabica MD - Family Medicine & Siobhan M. Dolan MD, MPH - Reproductive Genetics & E. Gregory Thompson MD - Internal Medicine
This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.