Guys you're thinking too much bio. D: I don't know but I'm way too exposed to physics and math, so my other theory was the one Isasapiens suggested:
Quote:
Originally Posted by Isasapiens
X and Y are coordinate axis to represent the series's jump to 3d.

I'm thinking that the whole reason they made it X and Y is related to the xaxis, yaxis and zaxis being the conventional names for the three axes in a threedimensional Cartesian coordinate system. So if there's a third version, I think that's gonna be Z if this theory holds. I mean it's for the 3DS. A threedimensional system / threedimensional dual screens thingo. So I think it sort of makes sense. :\
Plus chromosome theory suggests that the third version not be Z, imo. If anyone knows more biology than me then they should correct me, but I don't remember any other chromosome at the same league as the X chromosome and the Y chromosome. :(
Quote:
Originally Posted by dieter57
A 3D graph has three axis' X,Y, and Z. X and Y are only a 2D graph.

Well if they make a Z then it will still work as a reference to the threedimensional coordinate system, I suppose. :p