atavism [at-uh-viz-uh m]
a. the reappearance in an individual of characteristics of some remote ancestor that have been absent in intervening generations.
b. an individual embodying such a reversion
2. reversion to an earlier type; throwback.
See more synonyms on Thesaurus.com
Origin: 1825–35; < Latin atav(us) remote ancestor (at-, akin to atta familiar name for a grandfather + avus grandfather, forefather) + -ism
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.