Trisomy+13

This disease occurs when there is an extra chromosome 13 in either all or some of the cells in a persons body. This disorder is usually found in 1 out of every 10,000. This is not inherited from a parent, but instead results from a problem in the sperm or egg cell that goes on to make a fetus. The exact age that this disorder occurs is not known, but the risk for it goes up as the mothers age goes up. Also, it is mostly found in girls, and it is speculated that boys who have this disease are not strong enough to survive.
 * What is Trisomy 13?**

•extra fingers •deformed feet •small head •brain does not divide into two halves during gestation •small eyes •badly formed, or absence of nose
 * Symptoms:**


 * Treatments:**

http://www.nlm.nih.gov/medlineplus/ency/article/001660.htm#Causes,%20incidence,%20and%20risk%20factors http://rarediseases.about.com/od/rarediseasesp/a/patau05.htm