Besides the well-established endosymbiotic theory of the cellular origin of mitochondria and chloroplasts, there are theories that cells led to peroxisomes, spirochetes led to cilia and flagella, and that perhaps a DNA virus led to the cell nucleus, though none of them are widely accepted.
Tamusne iyat ən tartit təknat iji daɣ sənto ən tədagaten ən mitoəhondrie ad əhloroɗlastes,ilanət timusnawen tis intanated tidajaten awaynat as ɗeroxysomes, spirochètes ən ileyan ad zəmbay, ihaməš ɣirus ADN ən amass ən tedajit,harwa iyat dəsnat war təkna atwərd.