遺い伝でん子し突とつ然ぜん変へん異いいでんしとつぜんへんいじ字FuriganaMeanings1noungene mutationgenetics›Technical term in genetics for a permanent alteration in the DNA sequence of a gene.遺い伝でん子し突とつ然ぜん変へん異いは進しん化かの原