In your own words describe what is cancer, at least 5 charac…

In your own words describe what is cancer, at least 5 characteristic of cancer cells, and how does it arise in our cells. Under normal circumstances, several important types of genes control the activities of cells including regulating cell growth, division and repair of DNA during replication. Describe these proteins, oncogenes and tumor-suppressor genes, and how do mutations in these genes induce cancer? What type of tumor is the least life-threatening?