<unk>  is a genetic condition characterized by a sex chromosome aneuploidy, where individuals have two extra X chromosomes. People in most cases have two sex chromosomes: an X and a Y or two X chromosomes. The presence of one Y chromosome with a functioning SRY gene causes the expression of genes that determine maleness. Because of this,<unk>  only affects biological males, regardless of gender identity. The additional two X chromosomes in males with<unk>  causes them to have 48 chromosomes, instead of the typical 46.<unk>  is therefore often referred to as 48,XXXY. There is a wide variety of symptoms associated with this syndrome, including cognitive and behavioral problems, taurodontism, and infertility. This syndrome is usually inherited via a new mutation in one of the parents’ gametes, as those affected by it are usually infertile. It is estimated that<unk>  affects one in every 50,000 male births.
XXXY syndrome
XYY syndrome
XX male syndrome
XYYY syndrome
Turner syndrome
XXYY syndrome
XYYYY syndrome
Klinefelter syndrome