The evolution of the word "evolutionist".
"evolutionists"
The first generation, spelled correctly (that is, for a made up word), and at 13 letters long. It has been given an "s" in the 13th slot, which serves to express plurization. As such, it still functions in the same fashion as the original word, though its fundamental niche is slightly altered.
"evolutioniststs"
The second generation, which, after a case of nondisjunction on the 11th, and 12th letters, results in a genome that is 15 letters long, due to an extra copy of the letters 11 and 12, placed after letter 12 and before letter 13. Such a mutation is common and nonfatal, usually occuring due to being interrupted in the middle of typing. The word still serves its original purpose however, and can still reproduce itself in the general population.
"evolutiionuists"
The third, and final generation, which, although having the same number of letters as its parent, suffers from a nondisjuncted copy of the 7th letter, placed immediately after the original, and a nondisjuncted copy of the the fifth letter, curiously occuring in the 11th letter slot. There is simply no accounting for these errors, and the amount of fumbling at the keyboard required for such errors makes it essentially a mystery how such a catestrophe could occur. Due to such damaging mutations, it, unlike its parent, is unable to reproduce, and, as such, is left alone to die in a ditch.
Hopefully, the original population of the word will not be far behind.