A Mutation could be caused by a significant environmental factor or a specific set of events occurring during cell division. In a particular baby in the Saiyan incubation room, the hormone responsible for the creation of the cell which slowly diffuses S Cells into the body died prematurely, the brain noticed this and commanded the body to produce more however due to a malfunction in the electrical impulse sent by the brain to the effector, more cells which secreted S cells were created than necessary. This resulted in the number of unsecreted S cells in the body to go from around one thousand to one million. This was an invisible occurrence that went entirely unnoticed by the strange caregiver aliens that were responsible for the maintenance of Saiyans still inside incubation pods.
Dragon Ball Revised
Anime & Comics · LOLRIP
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