1. They have a long lifespan and tend to be resistant to cancer.
3. because they have more cells in their body, and a higher change that the cells can develop into cancer
4. 200 years
5. tumour suppressor genes
6. They are huge.
7. special properties in their tumour-suppressing genes and a fast turnover rate of these genes
8. It has a lower number of gene copies.
9. It could help them to find treatments for cancer and age-related diseases.