When a woman inherits three X chromosomes, she is diagnosed with Triple X syndrome, and her genotype is XXX.
Only women are affected by Triple X syndrome, which affects one out of every 1,000 female newborns.
This rare disease is caused by errors in meiosis 1 and 2 during the mother's gamete development, resulting in an aberrant ovum.
Females with triple X syndrome may experience no symptoms and be unaware that they have the illness, or they may experience signs such as being unusually tall and having fertility problems..