Often cancers are the results of mutations in genes caused by outside factors such as cigarette smoke (lung cancer) or the powerful rays of the sun (skin cancer). But sometimes you can inherit the mutations in these genes. This doesn’t mean you will definitely get cancer, but it does increase your chance. For example, there are two genes called BRCA1 and BRCA2 which you can inherit mutated copies of. These genes increase your risk of cancer of the breast and ovaries.
Cancers are pretty much uncontrolled cell growth. These are caused by errors in copying of the cells, by mutations. You can inherit predispositions to get certain types of cancer, this means you are more likely to develop a cencer. This does not mean you will.
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nehashah2001 commented on :
brilliant and helpful responses