I would like to know about fragile x syndrome?

Male dominated: The fragile x is named for a non staining region on the long arm of an x containing useless genetic material that results in mental impairment & physical changes(if you only have 1 x:males).The females usually show few if any features due to protection by a normal x, but not always & have a 50% chance of passing the fragile x to any offspring. This is a male dominated form of mental impairment.