atavism
Definition
A reappearance or resurgence of a trait or characteristic that was previously lost or recessive in a group or individual.
한국어 그룹이나 개인에서 이전에 잃어버린 또는 재수습된 특성 또는 특성의 재등장
Example
"The geneticist studied the phenomenon of atavism in a rare genetic disorder."