You can tell by the breeder you got the snake from, or breeding it out. A snake is considered a normal unless proven, or a visual. With retained sperm and parthenogenesis (asexual) reproduction it is not always 100 % dependable from a breeder. If its het for something good luck figuring out what it is. I have a few pretty normal that are my projects. One normal looks almost like a cinnamon with her coloring and blushing The other we are scratching our heads until next year fire yellow belly or something else they are still just pretty normals. The almost cinnamon is genetic next year its back to her son. Good luck.