Triple X Syndrome More Condition_symptoms WHAT EXACTLY IS TRIPLE X SYNDROME? EASY 10 POINTS!?

WHAT EXACTLY IS TRIPLE X SYNDROME? EASY 10 POINTS!? - triple x syndrome more condition_symptoms

I have a project on the Triple-X syndrome, need help! Please explain to me in plain English, or send me a link to a website that describes it very well! THANK YOU SO MUCH!