DNA (short for Deoxyribonucleic acid) plays an prominent role in the Elvin world. From Wanderlings to DNA Strips, DNA is important to the Elves. Sophie finds many of the DNA-related Elvin traditions gross, including the DNA Strips, although she has been using them for a few years now. The Elves also use DNA for lock on doors and lockers. At Foxfire, the lockers have strips that the students lick to unlock them. Every day, one of the teachers will pick a flavor for the strips. Elwin Heslege is famous for choosing bad tasting falvors.