2. Fragile X Syndrome is a genetic diseases that involves changes in the X chromosome. This symptom occurs in a fragile part of the X chromosome. Fragile X is the most common form of mental retardation. What is Fragile X?
3. Both boys and girls get this symptom. But it is more likely occurs and affect boys because they only have one X chromosome, unlike girls, who have two X chromosomes. This symptom can also occur even if your family does not have a history of this symptom. Who gets this symptom?
4. What is it caused by? Fragile X is caused a change in a single gene called FMR1 gene. This is a single gene of (CGG) that can cause lots of harm. The FMR1 gene is the gene that makes proteins that helps your brain grow. With that gene get damaged, it could cause lots of problem to the one which it comes in contact with. It becomes more dangerous if the gene starts spreading and the symptom becomes worse.
5. What can this cause? This diseases can cause behavior problems: Delay in crawling, walking, or twisting Hand clapping or hand biting Hyperactive or impulsive behavior Mental Retardation Speech and language delay Tendency to avoid eye contact Physical problems: Flat feet Flexible joins and low muscle tone Large body size Large forehead or ears with a prominent jaw Long face Soft skin
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7. "What Is Fragile X Syndrome?" The National Fragile X Foundation - Fragile X Syndrome. Web. 13 Apr. 2011.
8. "Summary of Fragile X Syndrome." The National Fragile X Foundation - Fragile X Syndrome
