Magana: Triple X syndrome ba a gada ba, amma yawanci yakan faru ne a yayin da ake samar da kwayoyin halitta (kwai da maniyyi). Kuskuren a cikin rarraba kwayar halitta da ake kira nondisjunction na iya haifar da kwayoyin halitta tare da ƙarin chromosomes. Alal misali, kwayar halitta ko kwayar zuma na iya samun ƙarin kwafin X chromosome sakamakon rashin rarrabuwa. Idan ɗayan waɗannan ƙwayoyin suna ba da gudummawa ga ƙirar kwayoyin halitta na yaro, yaron zai sami ƙarin X chromosome a cikin kowane ƙwayoyinta. A wasu lokuta, trisomy X yana faruwa a lokacin rarraba kwayar halitta a farkon ci gaban tayin. Tambaya: Wace ƙarin chromosome ne yaron zai samu?
X