Digital genetic code

Digital genetic code is apparently the virtual analogue of DNA. Little of its function is revealed on the show, but it is known that all members of Team Lyoko have it when on Lyoko.

Digital genetic code and DNA can apparently be converted into each other using a scanner; Jeremie once materialized one of Aelita's hairs in an early experiment, and later used the same hair to restore her after she was deleted. This seems to imply that, like DNA, digital genetic code specifies the form of a virtual being.

A graphic that looks rather like DNA can often be seen on Jeremie's screen in the Lab - it is possible that this is a representation of digital genetic code. It is in the shape of a triple helix - not a double helix like normal human DNA.

In Missing Link, the Scyphozoa stole Yumi's genetic code from her virtual structure, which meant that she could die in both worlds if she lost her life points.

Xanadu

Xanadu was the original name for Lyoko, and was only named in the pilot Garage Kids. It was a virtual world located at the Factory and accessible by Scanners, like in the real show. It is the obvious spawn for the name XANA. In Japanese, it means "paradise".

Xanadu was much smaller than Lyoko, however, and there were Towers of varying sizes and widths. Also, Aelita was not present here, or at least physically present. Ulrich and Yumi have different outfits in Xanadu, but only Ulrich's is actually seen in Garage Kids. Yumi's has a slightly different pattern and long sleeves, Ulrich has larger pants and some armor, as well as a different symbol on his headband and pale skin. Odd's outfit is the same except he has more stripes on his stomach area.