Genetics Channel
Topics
Quicklinks
Related Channels

Turner Syndrome and X Chromosome Defects

Since Turner syndrome and X chromosome defects are related, it's a good idea to have a basic understanding of the X chromosome problems that can cause the disorder. A woman with Turner syndrome will have one of three X chromosome defects, which include: defect of the X chromosome in all cells, absence of the X chromosome in some cells, and absence of the X chromosome in all cells.

An Overview of Turner Syndrome and X Chromosome Defects

The cause of Turner syndrome is a partial or complete absence of one of the two X chromosomes (sex chromosomes).
 
A woman with Turner syndrome will have one of three X chromosome problems:
 

Turner Syndrome and X Chromosome Defects: The Specifics

A third cause of Turner syndrome involves X chromosome defects, rather than complete loss. For example, one X chromosome may be fragmented, have portions deleted, or have other structural problems, such as ring formation preventing the normal expression of X chromosome genes.
 

Symptoms of Turner Syndrome With X Chromosome Defects

In a woman having one normal and one defective X chromosome, the symptoms vary widely.
 
A small deletion on the X chromosome may result in a single Turner syndrome feature, such as ovarian failure or short stature, and no other effects. Larger deletions or deletions on the X chromosome, affecting critical areas regulating the whole chromosome, may result in a full spectrum of Turner syndrome features.
 
7 Easy Tips for Starting Solids

Turner Syndrome Information

Referring Pages:
Terms of Use
Advertise with Us
Contact Us
About eMedTV
Privacy Policy
Copyright © 2006-2017 Clinaero, Inc.
eMedTV serves only as an informational resource. This site does not dispense medical advice or advice of any kind. Site users seeking medical advice about their specific situation should consult with their own physician. Click Terms of Use for more information.