We narrowed it down to one fragment; we sequenced it and found just one base pair had been deleted in an essential gene.
قمنا بتضييقه الى جزء واحد فقط. قمنا بوضع تسلسله وأكتشفنا بأنه تم مسح زوج-أساسي واحد في جين جوهري.