Skip to Content

XYY syndrome


Definition: a chromosomal anomaly with chromosome count 47, with a supernumerary Y chromosome; may be associated with tallness, increased physical activity, and a tendency to learning problems.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.