The definitive human gene debuff tier list - rank, compare, and debate the best and worst human gene debuff. Place each item from S (GOATed) to D (bottom tier) and share your human gene debuff rankings. Made for fans who love ranking human gene debuff, this tier list maker is free, easy to use, and perfect for settling debates on TierBuddy. Popular categories include genetics, human-biology, diseases, medical-conditions.