Clinical features: The chromosome pattern is found only in males, the majority have no unusual physical features or medical problems but a small proportion have some symptoms. Most males with 47,XYY syndrome have usual sexual development and fertility. The children of an XYY male usually have the usual chromosome pattern.
Incidence: The overall birth incidence is 1 in 1000 males, with no maternal age effect.
Chromosome: result: 47,XYY.
Recurrence risk: The risk of recurrence does not appear to be increased above the general population risk.
If you would like further information on 47, XYY
The Least You Need to Know Coffee Break Summary Pitfalls to Avoid Find Out More Clinical Scenarios at Genepool - 47 XYY
Back to genetic conditions index
