Most mutations that cause cancer occur within body cells, and body cell mutations are not inherited. if cancer is not inherited, why does cancer statically appear to run in families? family members have similar genetic make-up that may make them predisposed to cancer. family members are exposed to similar environmental conditions. family members have a widely varied genetic make-up that can be affected by specific mutagens. family members share the contagious mutagens that can be passed by close exposure.
