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 is widely accepted.
Tosan indik teori endosimbiotik sané sampun maju indi wit seluler mitokondria miwah kloroplas, wénten raris teori sané maosang yéning sel prasida ngawinang peroksisom, spirochetes ngawinang silia miwah flagella taler yéning kawéntenan virus DNA sané ngawinang inti sel, yadiastun nénten wénten saking indiké punika sané prasida katrima olih kramané sareng akéh.