So if we view an evolutionary sequence from the standpoint of life coping with deleterious effects of radiation, we should start with extremophilic bacteria Deinococcus radiodurans at one pole. The push and pull between biotic energy usage and protection from radiation is key.

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So if we view an evolutionary sequence from the standpoint of life coping with deleterious effects of radiation, we should start with extremophilic bacteria Deinococcus radiodurans at one pole. The push and pull between biotic energy usage and protection from radiation is key.

AFAIK unrelated, [i]D, radiodurans[/i] seems to have evolved its genetic protection against dry conditions..