Categorize each statement below as either true or false to test your knowledge of the causative factors involved in cancer. No correlation exists between cigarette smoking and the incidence of lung cancer In identical twins, it is impossible for one twin to develop a cancer and the other to remain cancer- free The tendency to develop The accumulation of a particular type of cancer cannot be inherited. many mutations appears to be necessary to bring about most cancers. The incidence of cancer increases with age as mutations accumulate Some cancers “run in families,” indicating that some mutations that are carried in germ-line cells may provide a “head start toward cancer development. Most mutations that lead to cancer arise sporadically from exposure to environmental mutagens. Most cancers result from Some people who smoke a single mutation in a cell tobacco will never develop lung cancer The incidence of cancer decreases with age as cell division slows down. proliferation gene True False Reset