Forms of genes Transcriptable, translatable gene(Z,y, A) Transcriptable but nontranslatable gene (tDNA, rDNA Nontranscriptable, nontranslatable gene promoter, -operator)★ Transcriptable, translatable gene ( Z,Y,A ) Transcriptable but nontranslatable gene ( tDNA, rDNA ) Nontranscriptable, nontranslatable gene ( promoter, operator ) Forms of genes