A mutated or overexpressed gene that has the potential to cause cancer by promoting uncontrolled cell growth and division. These genes normally help regulate cell growth but become dangerous when altered.
Coined in the 1960s from Greek 'onkos' meaning tumor or mass, and 'gene' from Greek 'genos' meaning birth or origin. The term evolved as scientists discovered that certain genes, when mutated, could transform normal cells into cancerous ones.
Oncogenes are like broken accelerator pedals in cells - they're actually normal growth-promoting genes that have gone haywire! What's mind-blowing is that we all carry the potential for cancer in our DNA; it's just usually kept in check by cellular safeguards.
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