Problem:
Deinococcus radiodurans is an amazing bacterium with a fantastic survival rate. It can survive to high doses of radiation, in a complete vacuum and in hydrochloric acid.
Required:
Question 1: How does this bacterium manage to restore damaged chromosome? It is polyploid with 4 to 10 copies of the genome which are packed in a highly ordered manner.
Question 2: Does this imply that creating multiple copies of the genome or increasing DNA base repair activity would increase life span?
Question 3: Is that even conceivable on bigger life forms? Please justify your answer.