The best explanation for what do arteries, veins, and capillaries do is that they A - arteries normally carry oxygen-rich blood away from the heart, veins on the other hand generally carry oxygen-depleted blood back to the heart. Capillaries, however, deliver blood to individual cells.
If the environment is radioactive it can.
Example of radioactive genetic mutation ^^
Also if the environment has been polluted it can too.
Example of pollution genetic mutation would be a frog born with extra legs from living in a polluted pond