Lomqulu ukhombisa ukuthi kungani indlela yokusebenza enjenge-electrophoresis idingeka ukuhlela amamolekhula e-DNA wobukhulu obungafani, kuhlanganise kokubili ama-plasmid aqondile nayisiyingi. Lokhu okuqukethwe kubuye kuhlole ukuthi kungani kungenzeki njalo ukwahlulela ubukhulu bocezu oluyisiyingi lwe-DNA kusetshenziswa ibanga i-DNA egijima kulo i-gel.