What is Fragile X Syndrome? (Genetic Intellectual Disability)
What Is Triple X Syndrome?
Triple X Syndrome
Triple X syndrome (Medical Condition)
Triple X syndrome, also known as trisomy X and 47,XXX, is characterized by the presence of an extra X chromosome in each cell of a female. Those affected are often taller than average. Usually there are no other physical differences and normal fertility. Occasionally there are learning difficulties, decreased muscle tone, seizures, or kidney problems.