# PrP, the gene responsible for the protein implicated in causing prion diseases like [[Creutzfeldt-Jacob_Disease]], has ''no beneficial function''. If evolution were correct, this gene could not persist in the population, but would quickly be selected against. | # PrP, the gene responsible for the protein implicated in causing prion diseases like [[Creutzfeldt-Jacob_Disease]], has ''no beneficial function''. If evolution were correct, this gene could not persist in the population, but would quickly be selected against. |