atavistic

at·a·vis·tic

(at-ă-vis'tik),

Relating to atavism.

atavistic

Etymology: L, atavus, ancestor

pertaining to the tendency for a genetic trait of a remote ancestor to be expressed in an individual as a result of a chance recombination of genes.

at·a·vis·tic

(at-ă-vis'tik)

Relating to atavism.

atavistic

Featuring characteristics not seen for many generations, or of a more primitive evolutionary form of the organism.