wait in the opening of the show didnt it specifically say he was trying to create "the perfect little girls"
first off thound sound like something a pedophil scientist would make (had to get that out of the way)
second how could he make the perfect little girls without the x chromosome? obviously chemical x has to be something different because he did not want to add whatever was in there. if chemical x was just x chromosome(s?) then how could he make girls without adding it?