Ka whai wāhi atu ki te wāhanga i raro nei, ā, ka whakautu i te pātai i muri mai i te reo kotahi ki te wāhanga: Kāore i te tuku iho te mate X Triple, engari i te nuinga o te wā ka puta hei kaupapa i te wā o te hanganga o ngā pūtau whakatipuranga (wai me te pūmua). Ka taea e tētahi hapa i roto i te wehenga pūtau i huaina nondisjunction hua i roto i ngā pūtau whakatipuranga ki chromosomes anō. Hei tauira, ka taea e te pūtau oocyte sperm ranei whiwhi i tētahi tārua anō o te X chromosome rite ki te hua o te non-disjunction. Ki te whai wāhi tetahi o enei pūtau ki te hanga iranga o te tamaiti, ka whai te tamaiti i te X chromosome anō i roto i ia o ona pūtau. I roto i ētahi take, puta trisomy X i roto i te wehenga pūtau i roto i te whanaketanga embryonic wawe. Pātai: He aha te chromosome anō ka te tamaiti?
Ko te X