BSC 108 Lecture Notes - Lecture 14: Chemotherapy, Radiation Therapy, Mutagen
22 Feb 2017
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Document Summary
Over 150,000 americans will be stricken by cancer of the colon or rectum. Colon cancer: spreads gradually, slow growing, produced by more than one mutation, treated fairly well. Mutation that lead to cancer usually arise in the organ cancer starts in. These mutations don"t affect reproductive cells so not passed on to children. Is some families: mutations in one or more genes predisposing the recipient to cancer can be passed on. Breast cancer has nothing to go with inherited mutations in the vast majority of cases. Some viruses have been shown to cause cancer. Human papilloma virus has been found in 99. 7% of all cervical cancers: also associated with 40% of all cancers of the penis, the mechanism is well understood. How do viruses cause cancer: some become part of the host cell dna these viruses can be involved in cancer if. They carry an oncogenes or a mutated tumor suppressor gene as part of their genome.
