How exactly does radioactivity cause mutation?
The wavelength and strength of X-Ray and higher waves have enough energy and concentration to break apart and destroy parts of your DNA, which when the DNA tries to rebuild itself will be formed into a different configuration (ie a mutation). Most cases with radiation, the change to the DNA removes the stable portion of your DNA causing a malicious mutation.
radioactivity can destroy the genes within your cells. When these are messed up, they sometimes repair themselves, but in the case that they don’t/ cant, they will copy the mutated gene when the cell divides. these daughter cells will have mutations too, so the cell will probsbly become cancerous.