▁was ▁born ▁with ▁some ▁sort ▁of ▁sexual ▁variation ▁that ▁is ▁evident ▁in ▁either ▁their ▁chrom os om es , ▁g on ads , ▁h orm ones , ▁gen it als , ▁etc . ▁In ▁this ▁case , ▁Alex ▁has ▁both ▁the ▁female ▁and ▁male ▁sexual ▁org ans . ▁As ▁a ▁result , ▁Alex ▁constantly ▁questions ▁herself ▁in ▁terms ▁of ▁whether ▁she ▁ident ifies ▁as ▁either ▁a ▁boy ▁or ▁a ▁girl , ▁and , ▁whether ▁she ▁is ▁attract ed ▁to ▁boys ▁or ▁girls . ▁Therefore , ▁Alex ' s ▁uncertainty ▁of ▁self - ident ification ▁is ▁another ▁theme ▁that ▁appears ▁within ▁this ▁film . ▁ ▁An ▁often ▁over look ed ▁theme ▁for ▁XX Y ▁is ▁N est or ' s ▁un cond itional ▁love ▁for ▁his ▁daughter , ▁Alex . ▁The ▁movie ▁dep ict s ▁how ▁her ▁mother , ▁Sul i ▁inv ites ▁her ▁best ▁friend ' s ▁family ▁to ▁stay ▁with ▁her ▁so ▁the ▁husband , ▁Ram iro , ▁can ▁operate ▁on ▁Alex ▁to ▁make ▁her ▁be ▁the ▁daughter ▁Sul i ▁has ▁always ▁dream t ▁of . ▁On ▁the ▁other ▁hand , ▁N est or , ▁wrote ▁a ▁book ▁about ▁Alex ' s ▁condition , ▁XX Y , ▁which ▁took ▁count less ▁time . ▁The ▁movie ▁also ▁doesn ' t ▁say ▁if ▁he ▁was ▁a ▁bi ologist ▁before ▁or ▁after ▁Alex ▁was ▁born , ▁but ▁it ' s ▁a ▁possibility ▁he ▁became ▁a ▁bi ologist ▁after ▁all ▁the ▁information ▁he ▁research ed ▁when ▁they ▁discover ▁Alex ▁had ▁both ▁male ▁and ▁female ▁sexual ▁parts