TOP logo
What is XXY?

What is XXY?:

What is XXY?
XXY or Ks?
Treatment - Part 2
Sexuality & Fertility
XXY Aneuploidies
For Parents
In Conclusion

To print all 9 of the
above sections as
one complete
document, click here

There are 23 pairs of chromosomes found in each cell of the body, and each contain genes that determine our colouring, our features, and our sex. Women inherit two X chromosomes -- one from each parent, written 46,XX.  Men inherit an X chromosome from their mothers and a Y chromosome from their fathers, written 46,XY.  Some individuals, however, have an additional X chromosome in their chromosomal arrangement, referred to as 47,XXY, or more commonly, just XXY.  The cause is unknown, yet XXY occurs in approximately 1 in every 500 to 1000 live male births, making it one of the most common chromosome variations.   The XXY variation is identified in an individual through a karyotype, a buccal smear, or FISH.

Next - History

Aneuploidies |  E - Mail Lists |  FaceBook |  Feedback |  Gender/Intersex |  International XXY Sites |  Links-Canada |  Links for Parents |  Medical Dictionary |  News |  Qu'est-ce Que le Syndrome de Klinefelter (XXY)? |  Site Information |  Site Search |  What is XXY? |  XXY Perspectives | 


This page first created: May 24, 1999