Work Sheet 17
DNA Mutation and Repair
1. Define the following mutations: point, silent, missense, nonsense and frameshift.
2. Define the terms transition and transversion.
3. Describe what is meant by a conservative and nonconservative mutation.
4. List five major ways that DNA can be damaged or mutated.
5. Outline the major steps of mismatch , nucleotide excision and recombination repair.
6. Outline the pathway by which p53 is believed to regulate DNA repair.
7. List four diseases that are attributed to defects in DNA repair.