Revision as of 07:59, 27 June 2020 by wikia:lgbta>Paiige1 (Created page with "thumb|220x220px|The XXYY flag. '''XXYY''' or '''48,XXYY syndrome''' or '''48,XXYY''' is a chromosomal disorder occurr...")
XXYY or 48,XXYY syndrome or 48,XXYY is a chromosomal disorder occurring in approximately 1 in 18,000 or 1 out of 40,000 people who are assigned male at birth, and causes them to have an extra X and an extra Y chromosome.