Conduct some research on BRCA1 and the genetics of cancer (remember to write down your sources). Read the following article, “The Epigenetics of Breast Cancer.” Start your discussion post with an explanation of how inheritance of a gene that increases risk of cancer does not lead to the certainty of cancer. In this paragraph, include a discussion of the steps that need to occur from a cellular and genetic perspective for cancer to occur. After reading the article, answer the following questions in a paragraph. You can also use your text and other sources, just remember to write down any sources you use and include them as references in your post. Briefly describe differential gene expression in cancer cells versus noncancerous cells. What is epigenetics, and how does it relate to gene expression? Would sequencing the DNA of a cancerous tumor allow a doctor to know whether there were changes in gene expression in a tumor?