1.	What is one of the most common types of hereditary cancer?	Breast and ovarian cancer



2.	Familial cancers suggest a clustering of cancers that likely occurred by chance. How is this explained?	There may be a combination of genetic and non-genetic (i.e., environmental) factors that contributed to the development of cancers within a family. i.e. smoking, obesity



3.	True or False. In familial cancer, an alteration in a single major gene is typically identified.	False. In familial cancer, an...