Isosiyete yacu :
XY umunara ni uruganda rukora amashanyarazi rwubushinwa, rutanga cyane cyane ibicuruzwa byamashanyarazi kubigo bikoresha ingufu zo murugo no hanze yacyo hamwe nabakiriya binganda zikoresha ingufu nyinshi.
Umunara wa XY ni uruganda rwihariye mu bijyanye no gukwirakwiza umurongo wa minara / pole, umunara w'itumanaho / pole, imiterere yo gusimbuza, hamwe n'amatara yo ku mihanda n'ibindi. .