E whā ngā whā o ngā karihi whakariterite: ko ngā karihi matimati konutea, ngā karihi pūāhua whakahohe ā-kaitā me te pūāhua whakahohe pērā ki te kaitākākā (TALENs), me te pūnaha Kapo Cas9-karuRNA (he mea urutau mai i te CRISPR).